View Filing Data

1,232.9

1,020.6

Property, plant and equipment, net

718.5

610.6

Total current assets

6,563.0

5,649.3

LONG-TERM ASSETS

2,378.1

2,019.3

1,387.1

1,121.3

1,383.8

1,110.7

Total long-term assets

5,149.0

4,251.3

Accounts payable and drafts

11,712.0

9,900.6

CURRENT LIABILITIES

Short-term borrowings

1.8

8.6

3,176.0

2,640.5

Accrued liabilities

1,706.2

1,497.6

Current portion of long-term debt

9.0

35.6

Total current liabilities

4,893.0

4,182.3

LONG-TERM LIABILITIES

Long-term debt

1,953.0

1,898.0

Total long-term liabilities

691.0

627.4

2,644.0

2,525.4

Redeemable noncontrolling interest

147.7

0.0

EQUITY

Preferred stock, 100,000,000 shares authorized (including 10,896,250 Series A convertible preferred stock authorized); no shares outstanding

0.0

Common stock, $0.01 par value, 300,000,000 shares authorized; 72,563,291 and 80,563,291 shares issued as of September 30, 2017 and December 31, 2016, respectively

0.7

0.8

Additional paid-in capital

1,199.3

1,385.3

Common stock held in treasury, 5,003,036 and 11,131,648 shares as of September 30, 2017 and December 31, 2016, respectively, at cost

(602.4)

(1,200.2)

Retained earnings

3,810.3

3,706.9

Accumulated other comprehensive loss

(536.8)

(835.6)

Lear Corporation stockholders’ equity

3,871.1

3,057.2

Noncontrolling interests

156.2

135.7

Equity

4,027.3

3,192.9

Total liabilities and equity

$ 11,712.0

$ 9,900.6

[1]	Unaudited.

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	72,563,291	80,563,291
Common stock held in treasury, shares	5,003,036	11,131,648
Series A convertible preferred stock
Preferred stock, shares authorized	10,896,250	10,896,250

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Income Statement [Abstract]
Net sales	$ 4,981.5	$ 4,526.4	$ 15,103.2	$ 13,914.1
Cost of sales	4,425.6	4,012.5	13,387.0	12,324.1
Selling, general and administrative expenses	158.2	153.6	471.1	456.9
Amortization of intangible assets	12.5	15.2	34.1	41.7
Interest expense	21.7	20.6	63.9	62.0
Other (income) expense, net	(21.8)	14.2	(12.3)	(0.8)
Consolidated income before provision for income taxes and equity in net income of affiliates	385.3	310.3	1,159.4	1,030.2
Provision for income taxes	77.8	88.2	240.2	287.4
Equity in net income of affiliates	(7.5)	(12.9)	(41.3)	(49.2)
Consolidated net income	315.0	235.0	960.5	792.0
Less: Net income attributable to noncontrolling interests	19.8	20.6	47.6	46.8
Net income attributable to Lear	$ 295.2	$ 214.4	$ 912.9	$ 745.2
Basic net income per share available to Lear common stockholders (in dollars per share)	$ 4.00	$ 3.01	$ 12.92	$ 10.19
Diluted net income per share available to Lear common stockholders (in dollars per share)	3.96	2.98	12.80	10.10
Cash dividends declared per share (in dollars per share)	$ 0.50	$ 0.30	$ 1.50	$ 0.90
Average common shares outstanding (in shares)	68,061,718	71,259,766	68,874,682	73,102,327
Average diluted shares outstanding (in shares)	68,834,279	72,052,270	69,536,808	73,809,220
Consolidated comprehensive income	$ 392.3	$ 245.3	$ 1,265.4	$ 816.0
Less: Comprehensive income attributable to noncontrolling interests	22.6	20.6	53.7	44.2
Comprehensive income attributable to Lear	$ 369.7	$ 224.7	$ 1,211.7	$ 771.8

Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions

9 Months Ended

Sep. 30, 2017

Oct. 01, 2016

Cash Flows from Operating Activities

Consolidated net income

$ 960.5

$ 792.0

Adjustments to reconcile consolidated net income to net cash provided by operating activities

Net change in recoverable customer engineering, development and tooling

313.2

283.4

(37.4)

2.1

Loss on extinguishment of debt

21.2

0.0

Net change in working capital items (see below)

(31.0)

3.0

Other, net

(42.2)

13.4

Net cash provided by operating activities

1,184.3

1,093.9

Cash Flows from Investing Activities

Additions to property, plant and equipment

(430.2)

(300.3)

Acquisition of Antolin Seating

(286.8)

0.0

Other, net

16.9

51.8

Net cash used in investing activities

(700.1)

(248.5)

Cash Flows from Financing Activities

New credit agreement borrowings

250.0

0.0

Prior credit agreement repayments

(468.7)

(15.6)

Short-term borrowings, net

(7.2)

8.9

Proceeds from the issuance of senior notes

744.7

0.0

Repurchase of senior notes

(517.0)

0.0

Payment of debt issuance and other financing costs

(11.7)

0.0

Dividends paid to Lear Corporation stockholders

(332.2)

(557.7)

(104.4)

(68.1)

Dividends paid to noncontrolling interests

(42.7)

(14.8)

Other, net

(56.6)

(52.1)

Net cash used in financing activities

(545.8)

(699.4)

Effect of foreign currency translation

43.7

(1.0)

Net Change in Cash and Cash Equivalents

(17.9)

145.0

Cash and Cash Equivalents as of Beginning of Period

1,271.6

1,196.6

Cash and Cash Equivalents as of End of Period

1,253.7

^[1]

1,341.6

Changes in Working Capital Items

Accounts receivable

(280.6)

(440.2)

Accrued liabilities and other

(114.7)

(87.3)

Accounts payable

245.6

203.6

118.7

326.9

Net change in working capital items

(31.0)

3.0

Supplementary Disclosure

Cash paid for interest

91.6

85.3

Cash paid for income taxes, net of refunds received

$ 224.9

$ 151.6

[1]	Unaudited.

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Lear Corporation ("Lear," and together with its consolidated subsidiaries, the "Company") and its affiliates design and manufacture automotive seating and electrical distribution systems and related components. The Company’s main customers are automotive original equipment manufacturers. The Company operates facilities worldwide. The accompanying condensed consolidated financial statements include the accounts of Lear, a Delaware corporation, and the wholly owned and less than wholly owned subsidiaries controlled by Lear. In addition, Lear consolidates all entities, including variable interest entities, in which it has a controlling financial interest. Investments in affiliates in which Lear does not have control but does have the ability to exercise significant influence over operating and financial policies are accounted for under the equity method. The Company’s annual financial results are reported on a calendar year basis, and quarterly interim results are reported using a thirteen week reporting calendar. Certain amounts in the prior period’s financial statements have been reclassified to conform to the presentation used in the quarter ended September 30, 2017. Cost of Sales and Selling, General and Administrative Expenses Cost of sales includes material, labor and overhead costs associated with the manufacture and distribution of the Company’s products. Distribution costs include inbound freight costs, purchasing and receiving costs, inspection costs, warehousing costs and other costs of the Company’s distribution network. Selling, general and administrative expenses include selling, engineering and development and administrative costs not directly associated with the manufacture and distribution of the Company’s products.

Acquisitions

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Acquisitions

Grupo Antolin Seating

On April 28, 2017, the Company completed the acquisition of Grupo Antolin's automotive seating business ("Antolin Seating") for $291.5 million, net of cash acquired. Antolin Seating is headquartered in France with operations in five countries in Europe and North Africa. The Antolin Seating business is comprised of just-in-time seat assembly, as well as seat structures, mechanisms and seat covers with annual sales of approximately $370 million.

The Antolin Seating acquisition was accounted for as a business combination, and accordingly, the assets acquired and liabilities assumed are included in the accompanying condensed consolidated balance sheet as of September 30, 2017. The operating results and cash flows of Antolin Seating are included in the accompanying condensed consolidated financial statements from the date of acquisition and in the Company's seating segment.

The net purchase price of $291.5 million is subject to adjustment and consists of cash paid of $286.8 million, net of cash acquired, and contingent consideration of $4.7 million. In addition, the Company incurred transaction costs of $3.1 million related to advisory services in the nine months ended September 30, 2017, which have been expensed as incurred and are recorded in selling, general and administrative expenses. The purchase price and preliminary allocation are shown below (in millions):



Purchase price paid, net of cash acquired	$	286.8
Acquisition date contingent consideration	4.7
Net purchase price	$	291.5

Property, plant and equipment	$	81.7
Other assets purchased and liabilities assumed, net	(34.2		)
Goodwill	122.6
Intangible assets	121.4
Preliminary purchase price allocation	$	291.5

Contingent consideration represents the discounted value of estimated amounts due to the seller pending the resolution of certain matters. As of the acquisition date, the value of estimated contingent consideration was $4.7 million.

Recognized goodwill is attributable to the assembled workforce, expected synergies and other intangible assets that do not qualify for separate recognition.

Intangible assets consist of provisional amounts recognized for the fair value of customer-based assets and were based on an independent appraisal. Customer-based assets include Antolin Seating's established relationships with its customers and the ability of these customers to generate future economic profits for the Company. It is currently estimated that these intangible assets have a weighted average useful life of approximately fifteen years.

The purchase price and related allocation are preliminary and will be revised as a result of additional information regarding the assets acquired and liabilities assumed, including, but not limited to, certain tax attributes, contingent liabilities and revisions of provisional estimates of fair values resulting from the completion of independent appraisals and valuations of property, plant and equipment and intangible assets.

The pro-forma effects of this acquisition do not materially impact the Company's reported results for any period presented.

For further information related to acquired assets measured at fair value, see Note 16, "Financial Instruments."

AccuMED

On December 21, 2016, the Company completed the acquisition of 100% of the outstanding equity interests of AccuMED Holdings Corp. ("AccuMED"), a privately-held developer and manufacturer of specialty fabrics, for $148.5 million, net of cash acquired. AccuMED has annual sales of approximately $80 million. The AccuMED acquisition was accounted for as a business combination, and accordingly, the assets acquired and liabilities assumed are included in the accompanying condensed consolidated balance sheets as of September 30, 2017 and December 31, 2016. The operating results and cash flows of AccuMED are included in the accompanying condensed consolidated financial statements from the date of acquisition and in the Company's seating segment. The purchase price and preliminary allocation are shown below (in millions):



Purchase price paid, net of cash acquired	$	148.5

Property, plant and equipment	$	11.2
Other assets purchased and liabilities assumed, net	7.2
Goodwill	77.1
Intangible assets	53.0
Preliminary purchase price allocation	$	148.5

Recognized goodwill is attributable to the assembled workforce, expected synergies and other intangible assets that do not qualify for separate recognition.

Intangible assets consist of amounts recognized for the fair value of customer-based assets and were based on an independent appraisal. Customer-based assets include AccuMED's established relationships with its customers and the ability of these customers to generate future economic profits for the Company. It is estimated that these intangible assets have a weighted average useful life of approximately thirteen years.

The purchase price allocation is preliminary and will be revised as a result of additional information regarding the assets acquired and liabilities assumed, including, but not limited to, certain tax attributes and contingent liabilities.

The pro-forma effects of this acquisition do not materially impact the Company's reported results for any period presented.

For further information related to acquired assets measured at fair value, see Note 16, "Financial Instruments."

Restructuring

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring

Restructuring costs include employee termination benefits, fixed asset impairment charges and contract termination costs, as well as other incremental costs resulting from the restructuring actions. These incremental costs principally include equipment and personnel relocation costs. The Company also incurs incremental manufacturing inefficiency costs at the operating locations impacted by the restructuring actions during the related restructuring implementation period. Restructuring costs are recognized in the Company’s condensed consolidated financial statements in accordance with GAAP. Generally, charges are recorded as restructuring actions are approved and/or implemented.

In the first nine months of 2017, the Company recorded charges of $48.6 million in connection with its restructuring actions. These charges consist of $39.5 million recorded as cost of sales, $10.2 million recorded as selling, general and administrative expenses and net credits of $1.1 million recorded as other income. The restructuring charges consist of employee termination costs of $41.0 million, fixed asset impairment charges of $0.4 million, a pension benefit plan settlement loss of $0.8 million and contract termination costs of $1.5 million, as well as other related costs of $4.9 million. Employee termination benefits were recorded based on existing union and employee contracts, statutory requirements, completed negotiations and Company policy. Fixed asset impairment charges relate to the disposal of buildings, leasehold improvements and/or machinery and equipment with carrying values of $0.4 million in excess of related estimated fair values.

The Company expects to incur approximately $36 million of additional restructuring costs related to activities initiated as of September 30, 2017, and expects that the components of such costs will be consistent with its historical experience. Any future restructuring actions will depend upon market conditions, customer actions and other factors.

A summary of 2017 activity, excluding the pension benefit plan settlement loss of $0.8 million (Note 9, "Pension and Other Postretirement Benefit Plans"), is shown below (in millions):



	Accrual as of		2017		Utilization						Accrual as of
	January 1, 2017		Charges		Cash			Non-cash			September 30, 2017
Employee termination benefits	$	69.4	$	41.0	$	(27.7	)	$	—		$	82.7
Asset impairment charges	—		0.4		—			(0.4		)	—
Contract termination costs	4.6		1.5		(1.2		)	—			4.9
Other related costs	—		4.9		(4.9		)	—			—
Total	$	74.0	$	47.8	$	(33.8	)	$	(0.4	)	$	87.6

Inventories

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs. A summary of inventories is shown below (in millions):



	September 30, 2017		December 31, 2016
Raw materials	$	909.2	$	746.3
Work-in-process	124.0		106.4
Finished goods	199.7		167.9
Inventories	$	1,232.9	$	1,020.6

Pre-Production Costs Related to Long-Term Supply Agreements

9 Months Ended

Sep. 30, 2017

Pre-Production Costs Related to Long-Term Supply Agreements

The Company incurs pre-production engineering and development ("E&D") and tooling costs related to the products produced for its customers under long-term supply agreements. The Company expenses all pre-production E&D costs for which reimbursement is not contractually guaranteed by the customer. In addition, the Company expenses all pre-production tooling costs related to customer-owned tools for which reimbursement is not contractually guaranteed by the customer or for which the Company does not have a non-cancelable right to use the tooling.

During the first nine months of 2017 and 2016, the Company capitalized $190.8 million and $110.5 million, respectively, of pre-production E&D costs for which reimbursement is contractually guaranteed by the customer. During the first nine months of 2017 and 2016, the Company also capitalized $93.5 million and $61.5 million, respectively, of pre-production tooling costs related to customer-owned tools for which reimbursement is contractually guaranteed by the customer or for which the Company has a non-cancelable right to use the tooling. These amounts are included in other current and long-term assets in the accompanying condensed consolidated balance sheets.

During the first nine months of 2017 and 2016, the Company collected $247.7 million and $168.9 million, respectively, of cash related to E&D and tooling costs.

The classification of recoverable customer E&D and tooling costs related to long-term supply agreements is shown below (in millions):



	September 30, 2017		December 31, 2016
Current	$	232.5	$	185.9
Long-term	54.0		43.4
Recoverable customer E&D and tooling	$	286.5	$	229.3

Long-Term Assets

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Long-Term Assets

Property, Plant and Equipment

Property, plant and equipment is stated at cost. Costs associated with the repair and maintenance of the Company’s property, plant and equipment are expensed as incurred. Costs associated with improvements which extend the life, increase the capacity or improve the efficiency or safety of the Company’s property, plant and equipment are capitalized and depreciated over the remaining useful life of the related asset. Depreciable property is depreciated over the estimated useful lives of the assets, using principally the straight-line method.

A summary of property, plant and equipment is shown below (in millions):



	September 30, 2017			December 31, 2016
Land	$	119.1		$	101.7
Buildings and improvements	772.2			648.1
Machinery and equipment	2,939.2			2,459.6
Construction in progress	348.1			296.4
Total property, plant and equipment	4,178.6			3,505.8
Less – accumulated depreciation	(1,800.5		)	(1,486.5		)
Property, plant and equipment, net	$	2,378.1		$	2,019.3

Depreciation expense was $99.2 million and $83.5 million in the three months ended September 30, 2017 and October 1, 2016, respectively, and $279.1 million and $241.7 million in the nine months ended September 30, 2017 and October 1, 2016, respectively.

The Company monitors its long-lived assets for impairment indicators on an ongoing basis in accordance with GAAP. If impairment indicators exist, the Company performs the required impairment analysis by comparing the undiscounted cash flows expected to be generated from the long-lived assets to the related net book values. If the net book value exceeds the undiscounted cash flows, an impairment loss is measured and recognized. Except as discussed below, the Company does not believe that there were any indicators that would have resulted in long-lived asset impairment charges as of September 30, 2017. The Company will, however, continue to assess the impact of any significant industry events on the realization of its long-lived assets.

In the first nine months of 2017 and 2016, the Company recognized fixed asset impairment charges of $0.4 million and $3.5 million, respectively, in conjunction with its restructuring actions (Note 3, "Restructuring").

Investment in Affiliates

On September 8, 2017, the Company gained control of Shanghai Lear STEC Automotive Parts Co., Ltd. (“Lear STEC”) by amending the existing joint venture agreement to eliminate the substantive participating rights of its joint venture partner. Prior to the amendment, Lear STEC was accounted for under the equity method. The consolidation of Lear STEC was accounted for as a business combination, and accordingly, the assets acquired and liabilities assumed are included in the accompanying condensed consolidated balance sheet as of September 30, 2017. The operating results and cash flows of Lear STEC are included in the accompanying condensed consolidated financial statements from the date of the amended joint venture agreement and are reflected in the Company’s E-Systems segment.

A preliminary summary of the fair value of the assets acquired and liabilities assumed in conjunction with the consolidation is shown below (in millions):



Property, plant and equipment	$	16.2
Other assets and liabilities assumed, net	42.7
Goodwill	94.1
Intangible assets	66.0
	$	219.0

Recognized goodwill is attributable to the assembled workforce, expected synergies and other intangible assets that do not qualify for separate recognition.

Intangible assets consist of amounts recognized for the fair value of customer-based assets and were based on an independent appraisal. Customer-based assets include Lear STEC’s established relationships with its customers and the ability of these customers to generate future economic profits for the Company. It is currently estimated that these intangible assets have a weighted average useful life of approximately 12 years.

The fair values of the assets acquired and liabilities assumed in conjunction with the consolidation contain provisional estimates that may be revised as a result of additional information obtained regarding such assets and liabilities.

As of the date of consolidation, the fair value of the Company’s previously held equity interest in Lear STEC was $94.0 million, and the fair value of the noncontrolling interest in Lear STEC was $125.0 million. As a result of valuing the Company’s prior equity interest in Lear STEC at fair value, the Company recognized a gain of $54.2 million, which is included in other (income) expense, net in the accompanying condensed consolidated statements of comprehensive income for the three and nine months ended September 30, 2017.

In connection with the consolidation, the noncontrolling interest holder obtained the option, which is embedded in the noncontrolling interest, to require the Company to purchase or redeem the 45% noncontrolling interest based on a pre-determined earnings multiple formula. In accordance with GAAP, the Company records redeemable noncontrolling interests at the greater of (1) the initial carrying amount adjusted for the noncontrolling interest holder’s share of total comprehensive income or loss and dividends (“noncontrolling interest carrying value”) or (2) the redemption value as of and based on conditions existing as of the reporting date. Required redemption adjustments are recorded as an increase to redeemable noncontrolling interests, with an offsetting adjustment to retained earnings. The redeemable noncontrolling interest is classified in mezzanine equity in the accompanying condensed consolidated balance sheet as of September 30, 2017.

Redemption value of a noncontrolling interest in excess of carrying value represents a dividend distribution that is different from dividend distributions to other common stockholders. Therefore, periodic redemption adjustments recorded in excess of carrying value are reflected as a reduction to the income available to common stockholders in the computation of earnings per share. Redeemable noncontrolling interest of $147.7 million related to Lear STEC is reflected in the Company's condensed consolidated balance sheet as of September 30, 2017. This amount includes a noncontrolling interest redemption adjustment of $22.7 million, representing the difference between the redemption value and carrying value.

Lear STEC’s annual sales are approximately $280 million. Lear STEC provides wire harnesses to SAIC Motor Corporation Limited and its joint ventures with both North American and European automotive manufacturers. The pro forma effects of this consolidation would not materially impact the Company’s reported results for any period presented.

For further information related to the redemption adjustment, see Note 13, "Comprehensive Income and Equity." For further information related to acquired assets measured at fair value, see Note 16, "Financial Instruments."

Goodwill

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Pension and Other Postretirement Benefit Plans

A summary of the changes in the carrying amount of goodwill, by operating segment, in the nine months ended September 30, 2017, is shown below (in millions):



	Seating		E-Systems		Total
Balance at January 1, 2017	$	1,091.2	$	30.1	$	1,121.3
Acquisition	122.6		—		122.6
Consolidation of affiliate	—		94.1		94.1
Foreign currency translation and other	48.9		0.2		49.1
Balance at September 30, 2017	$	1,262.7	$	124.4	$	1,387.1

Goodwill is not amortized but is tested for impairment on at least an annual basis. Impairment testing is required more often than annually if an event or circumstance indicates that an impairment is more likely than not to have occurred. In conducting its annual impairment testing, the Company may first perform a qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying amount. If not, no further goodwill impairment testing is required. If it is more likely than not that a reporting unit’s fair value is less than its carrying amount, or if the Company elects not to perform a qualitative assessment of a reporting unit, the Company then compares the fair value of the reporting unit to the related net book value. If the net book value of a reporting unit exceeds its fair value, an impairment loss is measured and recognized. The Company conducts its annual impairment testing as of the first day of its fourth quarter.

The Company does not believe that there were any indicators that would have resulted in goodwill impairment charges as of September 30, 2017. The Company will, however, continue to assess the impact of significant events or circumstances on its recorded goodwill.

For further information related to the acquisition, see Note 2, "Acquisitions." For further information related to the consolidation of an affiliate, see Note 6, "Long-Term Assets."

Debt

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Debt

A summary of long-term debt, net of unamortized debt issuance costs, and the related weighted average interest rates is shown below (in millions):



	September 30, 2017									December 31, 2016
Debt Instrument	Long-Term Debt		Debt Issuance Costs ⁽²⁾			Long-Term Debt, Net			Weighted Average Interest Rate	Long-Term Debt		Debt Issuance Costs⁽²⁾			Long-Term Debt, Net			Weighted Average Interest Rate
Credit Agreement — Term Loan Facility	$	250.0	$	(1.9	)	$	248.1		2.7%	$	468.7	$	(1.6	)	$	467.1		2.105%
4.75% Senior Notes due 2023 ("2023 Notes")	—		—			—			N/A	500.0		(4.8		)	495.2			4.75%
5.375% Senior Notes due 2024 ("2024 Notes")	325.0		(2.5		)	322.5			5.375%	325.0		(2.8		)	322.2			5.375%
5.25% Senior Notes due 2025 ("2025 Notes")	650.0		(6.0		)	644.0			5.25%	650.0		(6.6		)	643.4			5.25%
3.8% Senior Notes due 2027 ("2027 Notes") ⁽¹⁾	744.8		(6.0		)	738.8			3.885%	—		—			—			N/A
Other	8.6		—			8.6			N/A	5.7		—			5.7			N/A
	$	1,978.4	$	(16.4	)	1,962.0				$	1,949.4	$	(15.8	)	1,933.6
Less — Current portion						(9.0		)							(35.6		)
Long-term debt						$	1,953.0								$	1,898.0

⁽¹⁾ Net of unamortized discount of $5.2 million

⁽²⁾ Unamortized portion

Senior Notes

The issuance date, maturity date and interest payable dates of the Company's senior unsecured 2024 Notes, 2025 Notes and 2027 Notes (together, the "Notes") are as shown below:



Note	Issuance Date	Maturity Date	Interest Payable Dates
2024 Notes	March 2014	March 15, 2024	March 15 and September 15
2025 Notes	November 2014	January 15, 2025	January 15 and July 15
2027 Notes	August 2017	September 15, 2027	March 15 and September 15

In August 2017, the Company issued $750.0 million in aggregate principal amount at maturity of senior unsecured notes due 2027 at a stated coupon rate of 3.8%. The 2027 Notes were priced at 99.294% of par, resulting in a yield to maturity of 3.885%. The proceeds from the offering of $744.7 million, after original issue discount, were used to redeem the $500.0 million in aggregate principal amount of the 2023 Notes at a redemption price equal to 100% of the aggregate principal amount thereof, plus a "make-whole" premium of $17.0 million, as well as to refinance a portion of the Company's $500.0 million prior term loan facility (see "— Credit Agreement" below). In connection with these transactions, the Company recognized a loss of $21.2 million on the extinguishment of debt in the three and nine months ended September 30, 2017, and paid related issuance costs of $6.0 million.

Prior to June 15, 2027 (three months prior to the maturity date), the Company, at its option, may redeem some or all of the 2027 Notes at a redemption price equal to 100% of the principal amount thereof, plus a "make-whole" premium as of, and accrued and unpaid interest to, the redemption date. At any time on or after June 15, 2027, but prior to the maturity date of September 15, 2027, the Company, at its option, may redeem some or all of the 2027 Notes, at a redemption price equal to 100% of the principal amount thereof, plus accrued and unpaid interest to the redemption date.

Guarantees

The Notes are senior unsecured obligations. As discussed further in "— Credit Agreement" below, upon termination of the Company’s prior credit agreement, the subsidiaries that previously guaranteed the 2024 Notes and 2025 Notes were automatically released as guarantors. There are currently no guarantors of the Company’s obligations under the Notes.

Covenants

Subject to certain exceptions, the indentures governing the Notes contain restrictive covenants that, among other things, limit the ability of the Company to: (i) create or permit certain liens and (ii) consolidate, merge or sell all or substantially all of the Company’s assets. The indenture governing the 2024 Notes limits the ability of the Company to enter into sale and leaseback transactions. The indentures governing the Notes also provide for customary events of default. As of September 30, 2017, the Company was in compliance with all covenants under the indentures governing the Notes.

Credit Agreement

In August 2017, the Company entered into a new unsecured credit agreement (the "Credit Agreement") consisting of a $1.75 billion revolving credit facility ("Revolving Credit Facility") and a $250.0 million term loan facility (the "Term Loan Facility"), both of which mature on August 8, 2022. In connection with this transaction, the Company borrowed $250.0 million under the Term Loan Facility and paid related issuance costs of $5.7 million. At the same time, the Company terminated its previously existing credit agreement, which consisted of a $1.25 billion revolving credit facility and a $500 million term loan facility, and repaid amounts outstanding under the term loan facility of $453.1 million. Together with the offering of the 2027 Notes, these transactions extended the Company's maturity profile and increased its borrowing capacity.

As of September 30, 2017, there were no borrowings outstanding under the Revolving Credit Facility and $250.0 million of borrowings outstanding under the Term Loan Facility. As of December 31, 2016, there were no borrowings outstanding under the Company's prior revolving credit facility and $468.7 million of borrowings outstanding under the Company's prior term loan facility.

Advances under the Revolving Credit Facility and the Term Loan Facility generally bear interest based on (i) the Eurocurrency Rate (as defined in the Credit Agreement) or (ii) the Base Rate (as defined in the Credit Agreement) plus a margin, determined in accordance with a pricing grid. The range and the rate as of September 30, 2017, are as follows (in percentages):



	Eurocurrency Rate						Base Rate
	Minimum		Maximum		Rate as of September 30, 2017		Minimum		Maximum		Rate as of September 30, 2017
Revolving Credit Agreement	1.00	%	1.60	%	1.30	%	0.00	%	0.60	%	0.30	%
Term Loan Facility	1.125	%	1.90	%	1.50	%	0.125	%	0.90	%	0.50	%

A facility fee, which ranges from 0.125% to 0.30% of the total amount committed under the Revolving Credit Facility, is payable quarterly.

Guarantees

The Credit Agreement eliminated the subsidiary guarantees required under the Company's prior credit agreement. There are currently no guarantors of the Company’s obligations under the Credit Agreement.

Covenants

The Credit Agreement contains various customary representations, warranties and covenants by the Company, including, without limitation, (i) covenants regarding maximum leverage, (ii) limitations on fundamental changes involving the Company or its subsidiaries and (iii) limitations on indebtedness and liens. As of September 30, 2017, the Company was in compliance with all covenants under the Credit Agreement.

Scheduled Maturities

As of September 30, 2017, scheduled maturities related to the Term Loan Facility for the five succeeding years, as of the date of this Report, are shown below (in millions):



2017 ⁽¹⁾	$	1.6
2018	6.3
2019	7.8
2020	14.0
2021	14.0
2022	206.3

⁽¹⁾ Scheduled maturities for the fourth quarter of 2017

Other

As of September 30, 2017, other long-term debt consists of amounts outstanding under capital leases.

For further information related to the 2024 Notes, the 2025 Notes and the prior credit agreement, see Note 6, "Debt," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Pension and Other Postretirement Benefit Plans

9 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

The Company sponsors defined benefit pension plans and other postretirement benefit plans (primarily for the continuation of medical benefits) for eligible employees in the United States and certain other countries.

Net Periodic Pension and Other Postretirement Benefit (Credit) Cost

The components of the Company’s net periodic pension benefit cost are shown below (in millions):



	Three Months Ended												Nine Months Ended
	September 30, 2017						October 1, 2016						September 30, 2017						October 1, 2016
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign			U.S.			Foreign
Service cost	$	1.3		$	1.8		$	1.4		$	1.6		$	3.8		$	5.3		$	4.2		$	4.8
Interest cost	5.5			4.0			7.5			3.8			16.4			11.2			22.4			11.9
Expected return on plan assets	(7.3		)	(5.9		)	(9.5		)	(5.9		)	(21.7		)	(17.0		)	(28.6		)	(17.5		)
Amortization of actuarial loss	0.6			1.3			0.6			0.8			1.9			3.8			2.0			2.3
Settlement loss	—			—			—			—			0.2			0.8			0.2			—
Net periodic benefit cost	$	0.1		$	1.2		$	—		$	0.3		$	0.6		$	4.1		$	0.2		$	1.5

In the nine months ended September 30, 2017, the Company recognized a pension settlement loss of $0.8 million related to its restructuring actions.

The components of the Company’s net periodic other postretirement benefit (credit) cost are shown below (in millions):



	Three Months Ended												Nine Months Ended
	September 30, 2017						October 1, 2016						September 30, 2017						October 1, 2016
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign			U.S.			Foreign
Service cost	$	—		$	0.1		$	—		$	0.1		$	0.1		$	0.4		$	0.1		$	0.4
Interest cost	0.6			0.4			0.9			0.4			1.8			1.2			2.4			1.2
Amortization of actuarial (gain) loss	(0.7		)	0.1			(0.3		)	0.1			(2.0		)	0.2			(0.9		)	0.2
Amortization of prior service credit	—			(0.1		)	—			(0.1		)	—			(0.3		)	—			(0.3		)
Special termination benefits	—			—			—			—			—			0.1			—			0.3
Net periodic benefit (credit) cost	$	(0.1	)	$	0.5		$	0.6		$	0.5		$	(0.1	)	$	1.6		$	1.6		$	1.8

Contributions

In the nine months ended September 30, 2017, employer contributions to the Company’s domestic and foreign defined benefit pension plans were $7.6 million.

The Company expects contributions to its domestic and foreign defined benefit pension plans to be approximately $10 million to $15 million in 2017. The Company may elect to make contributions in excess of minimum funding requirements in response to investment performance or changes in interest rates or when the Company believes that it is financially advantageous to do so and based on its other cash requirements.

Other (Income) Expense, Net

9 Months Ended

Sep. 30, 2017

Other Income and Expenses [Abstract]

Other (Income) Expense, Net

Other (income) expense, net includes non-income related taxes, foreign exchange gains and losses, gains and losses related to certain derivative instruments and hedging activities, losses on the extinguishment of debt, gains and losses on the disposal of fixed assets and other miscellaneous income and expense.

A summary of other (income) expense, net is shown below (in millions):



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Other expense	$	34.4		$	15.5		$	47.2		$	34.7
Other income	(56.2		)	(1.3		)	(59.5		)	(35.5		)
Other (income) expense, net	$	(21.8	)	$	14.2		$	(12.3	)	$	(0.8	)

In the three and nine months ended September 30, 2017, other expense includes a loss of $21.2 million on the extinguishment of debt and net foreign currency transaction losses of $5.3 million and $3.9 million, respectively. In the three and nine months ended September 30, 2017, other income includes a gain of $54.2 million related to the consolidation of an affiliate (Note 6, "Long-Term Assets").

In the three and nine months ended October 1, 2016, other expense includes net foreign currency transaction losses of $3.6 million and $5.4 million, respectively. In the nine months ended October 1, 2016, other income includes a gain of $30.3 million related to the consolidation of an affiliate. For further information related to the 2016 consolidation of an affiliate, see Note 5, "Investments in Affiliates and Other Related Party Transactions," to the consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2016.

Income Taxes

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

A summary of the provision for income taxes and the corresponding effective tax rate for the three and nine months ended September 30, 2017 and October 1, 2016, is shown below (in millions, except effective tax rates):



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Provision for income taxes	$	77.8		$	88.2		$	240.2		$	287.4
Pretax income before equity in net income of affiliates	$	385.3		$	310.3		$	1,159.4		$	1,030.2
Effective tax rate	20.2		%	28.4		%	20.7		%	27.9		%

On January 1, 2017, the Company adopted Accounting Standards Update ("ASU") 2016-09, "Improvements to Employee Share-Based Payment Accounting." The new standard requires that the tax impact related to the difference between share-based compensation for book and tax purposes be recognized as income tax benefit or expense in the Company’s condensed consolidated statement of comprehensive income in the reporting period in which such awards vest. The standard also required a modified retrospective adoption for previously unrecognized excess tax benefits. Accordingly, the Company recognized a deferred tax asset of $54.5 million and a corresponding credit to retained earnings in conjunction with the adoption. The effects of adopting the other provisions of ASU 2016-09 were not significant.

In the first nine months of 2017 and 2016, the provision for income taxes was primarily impacted by the level and mix of earnings among tax jurisdictions. In the first nine months of 2017, the Company recognized net tax benefits of $68.4 million, of which $28.7 million related to the reversal of valuation allowances on the deferred tax assets of certain foreign subsidiaries, $16.3 million related to the change in the accounting for share-based compensation discussed above, $7.5 million related to the redemption of the 2023 Notes and $15.9 million related to restructuring charges and various other items. In addition, the Company recognized a gain of $54.2 million related to the consolidation of an affiliate, for which no tax expense was provided. In the first nine months of 2016, the Company recognized net tax benefits of $14.5 million related to restructuring charges and various other items. In addition, the Company recognized a gain of $30.3 million related to the consolidation of an affiliate, for which no tax expense was provided. Excluding these items, the effective tax rate for the first nine months of 2017 and 2016 approximated the U.S. federal statutory income tax rate of 35% adjusted for income taxes on foreign earnings, losses and remittances, valuation allowances, tax credits, income tax incentives and other permanent items.

The Company’s current and future provision for income taxes is impacted by the initial recognition of and changes in valuation allowances in certain countries. The Company intends to maintain these allowances until it is more likely than not that the deferred tax assets will be realized. The Company’s future provision for income taxes will include no tax benefit with respect to losses incurred and, except for certain jurisdictions, no tax expense with respect to income generated in these countries until the respective valuation allowances are eliminated. Accordingly, income taxes are impacted by changes in valuation allowances and the mix of earnings among jurisdictions. The Company evaluates the realizability of its deferred tax assets on a quarterly basis. In completing this evaluation, the Company considers all available evidence in order to determine whether, based on the weight of the evidence, a valuation allowance for its deferred tax assets is necessary. Such evidence includes historical results, future reversals of existing taxable temporary differences and expectations for future taxable income (exclusive of the reversal of temporary differences and carryforwards), as well as the implementation of feasible and prudent tax planning strategies. If, based on the weight of the evidence, it is more likely than not that all or a portion of the Company’s deferred tax assets will not be realized, a valuation allowance is recorded. If operating results improve or decline on a continual basis in a particular jurisdiction, the Company’s decision regarding the need for a valuation allowance could change, resulting in either the initial recognition or reversal of a valuation allowance in that jurisdiction, which could have a significant impact on income tax expense in the period recognized and subsequent periods.

As of September 30, 2017, the Company has approximately $300 million of excess foreign tax credits at certain foreign subsidiaries that cannot be recognized under GAAP until the related foreign earnings are repatriated to the United States through dividends. It is likely that the Company will repatriate these foreign earnings and recognize all or a substantial portion of such foreign tax credits in the fourth quarter of 2017. The recognition of these foreign tax credits would create a deferred tax asset that under current U.S. tax law may reduce U.S. tax on certain foreign source income over the next several years.

For further information related to the 2017 consolidation of an affiliate, see Note 6, "Long-Term Assets." For further information related to the Company's income taxes, see Note 7, "Income Taxes," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Net Income Per Share Attributable to Lear

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Net Income Per Share Attributable to Lear

Basic net income per share available to Lear common stockholders is computed using the two-class method by dividing net income attributable to Lear, after deducting the redemption adjustment related to the redeemable noncontrolling interest, by the average number of common shares outstanding during the period. Common shares issuable upon the satisfaction of certain conditions pursuant to a contractual agreement are considered common shares outstanding and are included in the computation of basic net income per share available to Lear common stockholders.

Diluted net income per share available to Lear common stockholders is computed using the two-class method by dividing net income attributable to Lear, after deducting the redemption adjustment related to the redeemable noncontrolling interest, by the average number of common shares outstanding, including the dilutive effect of common stock equivalents computed using the treasury stock method and the average share price during the period.

A summary of information used to compute basic and diluted net income per share available to Lear common stockholders is shown below (in millions, except share and per share data):



	Three Months Ended					Nine Months Ended
	September 30, 2017			October 1, 2016		September 30, 2017			October 1, 2016
Net income attributable to Lear	$	295.2		$	214.4	$	912.9		$	745.2
Less: Redeemable noncontrolling interest adjustment	(22.7		)	—		(22.7		)	—
Net income available to Lear common stockholders	$	272.5		$	214.4	$	890.2		$	745.2

Average common shares outstanding	68,061,718			71,259,766		68,874,682			73,102,327
Dilutive effect of common stock equivalents	772,561			792,504		662,126			706,893
Average diluted shares outstanding	68,834,279			72,052,270		69,536,808			73,809,220

Basic net income per share available to Lear common stockholders	$	4.00		$	3.01	$	12.92		$	10.19

Diluted net income per share available to Lear common stockholders	$	3.96		$	2.98	$	12.80		$	10.10

For further information related to the redeemable noncontrolling interest adjustment, see Note 6, "Long-Term Assets."

Comprehensive Income and Equity

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Comprehensive Income and Equity

Comprehensive Income

Comprehensive income is defined as all changes in the Company’s net assets except changes resulting from transactions with stockholders. It differs from net income in that certain items recorded in equity are included in comprehensive income.

A summary of comprehensive income and reconciliations of equity, Lear Corporation stockholders’ equity and noncontrolling interests for the three and nine months ended September 30, 2017, is shown below (in millions):



	Three Months Ended September 30, 2017									Nine Months Ended September 30, 2017
	Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests			Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests
Beginning equity balance	$	3,756.2		$	3,621.9		$	134.3		$	3,192.9		$	3,057.2		$	135.7
Stock-based compensation transactions	14.9			14.9			—			8.4			8.4			—
Repurchase of common stock	(77.9		)	(77.9		)	—			(332.2		)	(332.2		)	—
Dividends declared to Lear Corporation stockholders	(34.8		)	(34.8		)	—			(105.8		)	(105.8		)	—
Dividends declared to noncontrolling interest holders	(0.7		)	—			(0.7		)	(33.2		)	—			(33.2		)
Adoption of ASU 2016-09 (Note 11, "Taxes")	—			—			—			54.5			54.5			—
Redeemable non-controlling interest adjustment	(22.7		)	(22.7		)	—			(22.7		)	(22.7		)	—
Comprehensive income:
Net income	315.0			295.2			19.8			960.5			912.9			47.6
Other comprehensive income, net of tax:
Defined benefit plan adjustments	(1.8		)	(1.8		)	—			(3.0		)	(3.0		)	—
Derivative instruments and hedging activities	(10.8		)	(10.8		)	—			57.2			57.2			—
Foreign currency translation adjustments	89.9			87.1			2.8			250.7			244.6			6.1
Other comprehensive income	77.3			74.5			2.8			304.9			298.8			6.1
Comprehensive income	392.3			369.7			22.6			1,265.4			1,211.7			53.7
Ending equity balance	$	4,027.3		$	3,871.1		$	156.2		$	4,027.3		$	3,871.1		$	156.2

A summary of changes, net of tax, in accumulated other comprehensive loss for the three and nine months ended September 30, 2017, is shown below (in millions):



	Three Months Ended September 30, 2017			Nine Months Ended September 30, 2017
Defined benefit plans:
Balance at beginning of period	$	(194.0	)	$	(192.8	)
Reclassification adjustments (net of tax expense of $0.3 million and $1.2 million in the three and nine months ended September 30, 2017, respectively)	0.9			3.4
Other comprehensive loss recognized during the period (net of tax impact of $— million in the three and nine months ended September 30, 2017)	(2.7		)	(6.4		)
Balance at end of period	$	(195.8	)	$	(195.8	)

Derivative instruments and hedging:
Balance at beginning of period	$	22.9		$	(45.1	)
Reclassification adjustments (net of tax benefit of $1.0 million and tax expense of $1.9 million in the three and nine months ended September 30, 2017, respectively)	(3.1		)	5.7
Other comprehensive income (loss) recognized during the period (net of tax benefit of $3.2 million and tax expense of $16.6 million in the three and nine months ended September 30, 2017, respectively)	(7.7		)	51.5
Balance at end of period	$	12.1		$	12.1

Foreign currency translation:
Balance at beginning of period	$	(440.2	)	$	(597.7	)
Other comprehensive income recognized during the period (net of tax impact of $— million in the three and nine months ended September 30, 2017)	87.1			244.6
Balance at end of period	$	(353.1	)	$	(353.1	)

In the three and nine months ended September 30, 2017, foreign currency translation adjustments are related primarily to the strengthening of the Euro and, to a lesser extent, the Chinese renminbi relative to the U.S. dollar. In the three and nine months ended September 30, 2017, foreign currency translation adjustments include pretax losses of $0.2 million and pretax gains of $0.6 million, respectively, related to intercompany transactions for which settlement is not planned or anticipated in the foreseeable future.

A summary of comprehensive income and reconciliations of equity, Lear Corporation stockholders’ equity and noncontrolling interests for the three and nine months ended October 1, 2016, is shown below (in millions):



	Three Months Ended October 1, 2016									Nine Months Ended October 1, 2016
	Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests			Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests
Beginning equity balance	$	3,156.1		$	3,012.8		$	143.3		$	3,017.7		$	2,927.4		$	90.3
Stock-based compensation transactions	15.6			15.6			—			6.7			6.7			—
Repurchase of common stock	(152.7		)	(152.7		)	—			(557.7		)	(557.7		)	—
Dividends declared to Lear Corporation stockholders	(21.9		)	(21.9		)	—			(67.5		)	(67.5		)	—
Dividends declared to noncontrolling interest holders	(0.4		)	—			(0.4		)	(13.2		)	—			(13.2		)
Consolidation of affiliate	1.0			—			1.0			41.0			—			41.0
Non-controlling interests — other	—			—			—			—			(2.2		)	2.2
Comprehensive income:
Net income	235.0			214.4			20.6			792.0			745.2			46.8
Other comprehensive income (loss), net of tax:
Defined benefit plan adjustments	1.5			1.5			—			(0.2		)	(0.2		)	—
Derivative instruments and hedging activities	0.8			0.8			—			(10.6		)	(10.6		)	—
Foreign currency translation adjustments	8.0			8.0			—			34.8			37.4			(2.6		)
Other comprehensive income (loss)	10.3			10.3			—			24.0			26.6			(2.6		)
Comprehensive income	245.3			224.7			20.6			816.0			771.8			44.2
Ending equity balance	$	3,243.0		$	3,078.5		$	164.5		$	3,243.0		$	3,078.5		$	164.5

A summary of changes, net of tax, in accumulated other comprehensive loss for the three and nine months ended October 1, 2016, is shown below (in millions):



	Three Months Ended October 1, 2016			Nine Months Ended October 1, 2016
Defined benefit plans:
Balance at beginning of period	$	(196.3	)	$	(194.6	)
Reclassification adjustments (net of tax expense of $0.3 million and $1.0 million in the three and nine months ended October 1, 2016, respectively)	0.8			2.5
Other comprehensive income (loss) recognized during the period (net of tax impact of $— million in the three and nine months ended October 1, 2016)	0.7			(2.7		)
Balance at end of period	$	(194.8	)	$	(194.8	)

Derivative instruments and hedging:
Balance at beginning of period	$	(50.1	)	$	(38.7	)
Reclassification adjustments (net of tax expense of $6.0 million and $16.7 million in the three and nine months ended October 1, 2016, respectively)	17.1			46.2
Other comprehensive loss recognized during the period (net of tax benefit of $6.0 million and $20.5 million in the three and nine months ended October 1, 2016, respectively)	(16.3		)	(56.8		)
Balance at end of period	$	(49.3	)	$	(49.3	)

Foreign currency translation:
Balance at beginning of period	$	(467.4	)	$	(496.8	)
Other comprehensive income recognized during the period (net of tax impact of $— million in the three and nine months ended October 1, 2016)	8.0			37.4
Balance at end of period	$	(459.4	)	$	(459.4	)

In the three months ended October 1, 2016, foreign currency translation adjustments are related primarily to the strengthening of the Euro relative to the U.S. dollar. In the nine months ended October 1, 2016, foreign currency translation adjustments are related primarily to the strengthening of the Euro and Brazilian real relative to the U.S. dollar, partially offset by the weakening of the Chinese renminbi relative to the U.S. dollar, and include pretax losses of $0.5 million related to intercompany transactions for which settlement is not planned or anticipated in the foreseeable future.

For further information regarding reclassification adjustments related to the Company's defined benefit plans, see Note 9, "Pension and Other Postretirement Benefit Plans." For further information regarding reclassification adjustments related to the Company's derivative and hedging activities, see Note 16, "Financial Instruments."

Lear Corporation Stockholders’ Equity

Common Stock Share Repurchase Program

In February 2017, the Company's Board of Directors authorized a $658.8 million increase to the existing common stock share repurchase program to provide for a remaining aggregate repurchase authorization of $1.0 billion and extended the term of the program to December 31, 2019. In the first nine months of 2017, the Company paid, in aggregate, $332.2 million for repurchases of its outstanding common stock (2,320,469 shares at an average purchase price of $143.14 per share, excluding commissions). As of the end of the third quarter of 2017, the Company has a remaining repurchase authorization of $667.8 million under its ongoing common stock share repurchase program. The Company may implement these share repurchases through a variety of methods, including, but not limited to, open market purchases, accelerated stock repurchase programs and structured repurchase transactions. The extent to which the Company will repurchase its outstanding common stock and the timing of such repurchases will depend upon its financial condition, prevailing market conditions, alternative uses of capital and other factors.

Since the first quarter of 2011, the Company's Board of Directors has authorized $4.1 billion in share repurchases under its common stock share repurchase program. As of the end of the third quarter of 2017, the Company has paid, in aggregate, $3.4 billion for repurchases of its outstanding common stock, at an average price of $78.18 per share, excluding commissions and related fees.

In addition to shares repurchased under the Company’s common stock share repurchase program described in the preceding paragraphs, the Company classified shares withheld from the settlement of the Company’s restricted stock unit and performance share awards to cover minimum tax withholding requirements as common stock held in treasury in the accompanying condensed consolidated balance sheets as of September 30, 2017 and December 31, 2016.

As approved by the Board of Directors, in May 2017, the Company retired 8.0 million shares of common stock held in treasury. These retired shares are reflected as authorized, but not issued, in the accompanying condensed consolidated balance sheet as of September 30, 2017. The retirement of shares held in treasury resulted in a reduction in the par value of common stock, additional paid-in capital and retained earnings of $0.1 million, $155.9 million and $735.5 million, respectively. These reductions were offset by a corresponding reduction in shares held in treasury of $891.5 million. Accordingly, there was no effect on stockholders’ equity as a result of this transaction.

Quarterly Dividend

In the first nine months of 2017 and 2016, the Company’s Board of Directors declared quarterly cash dividends of $0.50 and $0.30 per share of common stock, respectively. In the first nine months of 2017, declared dividends totaled $105.8 million, and dividends paid totaled $104.4 million. In the first nine months of 2016, declared dividends totaled $67.5 million, and dividends paid totaled $68.1 million. Dividends payable on common shares to be distributed under the Company’s stock-based compensation program and common shares contemplated as part of the Company’s emergence from Chapter 11 bankruptcy proceedings will be paid when such common shares are distributed.

Noncontrolling Interests

In the first nine months of 2017 and 2016, the Company gained control of and consolidated affiliates. For further information related to the 2017 consolidation, see Note 6, "Long-Term Assets." For further information related to the 2016 consolidation, see Note 5, "Investment in Affiliates and Other Related Party Transactions," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.

Legal and Other Contingencies

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Legal and Other Contingencies

As of September 30, 2017 and December 31, 2016, the Company had recorded reserves for pending legal disputes, including commercial disputes and other matters, of $8.7 million and $11.0 million, respectively. Such reserves reflect amounts recognized in accordance with GAAP and exclude the cost of legal representation. Product liability and warranty reserves are recorded separately from legal reserves, as described below.

Commercial Disputes

The Company is involved from time to time in legal proceedings and claims, including, without limitation, commercial or contractual disputes with its customers, suppliers and competitors. These disputes vary in nature and are usually resolved by negotiations between the parties.

Product Liability and Warranty Matters

In the event that use of the Company’s products results in, or is alleged to result in, bodily injury and/or property damage or other losses, the Company may be subject to product liability lawsuits and other claims. Such lawsuits generally seek compensatory damages, punitive damages and attorneys’ fees and costs. In addition, if any of the Company’s products are, or are alleged to be, defective, the Company may be required or requested by its customers to participate in a recall or other corrective action involving such products. Certain of the Company’s customers have asserted claims against the Company for costs related to recalls or other corrective actions involving its products. The Company can provide no assurances that it will not experience material claims in the future or that it will not incur significant costs to defend such claims.

To a lesser extent, the Company is a party to agreements with certain of its customers, whereby these customers may pursue claims against the Company for contribution of all or a portion of the amounts sought in connection with product liability and warranty claims.

In certain instances, allegedly defective products may be supplied by Tier 2 suppliers. The Company may seek recovery from its suppliers of materials or services included within the Company’s products that are associated with product liability and warranty claims. The Company carries insurance for certain legal matters, including product liability claims, but such coverage may be limited. The Company does not maintain insurance for product warranty or recall matters. Future dispositions with respect to the Company’s product liability claims that were subject to compromise under the Chapter 11 bankruptcy proceedings will be satisfied out of a common stock and warrant reserve established for that purpose.

The Company records product warranty reserves when liability is probable and related amounts are reasonably estimable.

A summary of the changes in reserves for product liability and warranty claims for the nine months ended September 30, 2017, is shown below (in millions):



Balance at January 1, 2017	$	49.1
Expense, net (including changes in estimates)	12.5
Settlements	(15.5		)
Foreign currency translation and other	3.0
Balance at September 30, 2017	$	49.1

Environmental Matters

The Company is subject to local, state, federal and foreign laws, regulations and ordinances which govern activities or operations that may have adverse environmental effects and which impose liability for clean-up costs resulting from past spills, disposals or other releases of hazardous wastes and environmental compliance. The Company’s policy is to comply with all applicable environmental laws and to maintain an environmental management program based on ISO 14001 to ensure compliance with this standard. However, the Company currently is, has been and in the future may become the subject of formal or informal enforcement actions or procedures.

As of September 30, 2017 and December 31, 2016, the Company had recorded environmental reserves of $9.0 million. The Company does not believe that the environmental liabilities associated with its current and former properties will have a material adverse impact on its business, financial condition, results of operations or cash flows; however, no assurances can be given in this regard.

Other Matters

The Company is involved from time to time in various other legal proceedings and claims, including, without limitation, intellectual property matters, tax claims and employment matters. Although the outcome of any legal matter cannot be predicted with certainty, the Company does not believe that any of the other legal proceedings or claims in which the Company is currently involved, either individually or in the aggregate, will have a material adverse impact on its business, financial condition, results of operations or cash flows. However, no assurances can be given in this regard.

Although the Company records reserves for legal disputes, product liability and warranty claims and environmental and other matters in accordance with GAAP, the ultimate outcomes of these matters are inherently uncertain. Actual results may differ significantly from current estimates.

Segment Reporting

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Segment Reporting

The Company has two reportable operating segments: seating, which includes complete seat systems and all major seat components, including seat covers and surface materials such as leather and fabric, seat structures and mechanisms, seat foam and headrests, and E-Systems, which includes complete electrical distribution systems, electronic control modules and associated software and wireless communication modules. Key components in the electrical distribution system include wiring harnesses, terminals and connectors and junction boxes, including components for high power and hybrid electric systems. The other category includes unallocated costs related to corporate headquarters, regional headquarters and the elimination of intercompany activities, none of which meets the requirements for being classified as an operating segment.

The Company evaluates the performance of its operating segments based primarily on (i) revenues from external customers, (ii) pretax income before equity in net income of affiliates, interest expense and other expense, net, ("segment earnings") and (iii) cash flows, being defined as segment earnings less capital expenditures plus depreciation and amortization.

A summary of revenues from external customers and other financial information by reportable operating segment is shown below (in millions):



	Three Months Ended September 30, 2017
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	3,868.9	$	1,112.6	$	—		$	4,981.5
Segment earnings ⁽¹⁾	298.8		155.5		(69.1		)	385.2
Depreciation and amortization	76.7		31.3		3.7			111.7
Capital expenditures	109.7		42.7		3.8			156.2
Total assets	7,413.5		2,262.7		2,035.8			11,712.0



	Three Months Ended October 1, 2016
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	3,513.3	$	1,013.1	$	—		$	4,526.4
Segment earnings ⁽¹⁾	269.5		140.3		(64.7		)	345.1
Depreciation and amortization	67.9		27.5		3.3			98.7
Capital expenditures	80.3		34.9		3.4			118.6
Total assets	6,348.8		1,746.6		2,182.0			10,277.4



	Nine Months Ended September 30, 2017
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	11,762.0	$	3,341.2	$	—		$	15,103.2
Segment earnings ⁽¹⁾	941.8		476.7		(207.5		)	1,211.0
Depreciation and amortization	213.2		89.0		11.0			313.2
Capital expenditures	287.1		126.2		16.9			430.2
Total assets	7,413.5		2,262.7		2,035.8			11,712.0



	Nine Months Ended October 1, 2016
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	10,755.7	$	3,158.4	$	—		$	13,914.1
Segment earnings ⁽¹⁾	848.8		441.5		(198.9		)	1,091.4
Depreciation and amortization	193.8		80.5		9.1			283.4
Capital expenditures	204.6		79.5		16.2			300.3
Total assets	6,348.8		1,746.6		2,182.0			10,277.4

⁽¹⁾See definition above

For the three months ended September 30, 2017, segment earnings include restructuring charges of $13.3 million, $2.7 million and $1.0 million in the seating and E-Systems segments and in the other category, respectively. For the nine months ended September 30, 2017, segment earnings include restructuring charges of $29.6 million, $6.3 million and $12.7 million in the seating and E-Systems segments and in the other category, respectively (Note 3, "Restructuring").

For the three months ended October 1, 2016, segment earnings include restructuring charges of $7.8 million, $6.9 million and $0.2 million in the seating and E-Systems segments and in the other category, respectively. For the nine months ended October 1, 2016, segment earnings include restructuring charges of $30.8 million, $17.5 million and $2.9 million in the seating and E-Systems segments and in the other category, respectively (Note 3, "Restructuring").

A reconciliation of segment earnings to consolidated income before provision for income taxes and equity in net income of affiliates is shown below (in millions):



	Three Months Ended					Nine Months Ended
	September 30, 2017			October 1, 2016		September 30, 2017			October 1, 2016
Segment earnings	$	385.2		$	345.1	$	1,211.0		$	1,091.4
Interest expense	21.7			20.6		63.9			62.0
Other (income) expense, net	(21.8		)	14.2		(12.3		)	(0.8		)
Consolidated income before provision for income taxes and equity in net income of affiliates	$	385.3		$	310.3	$	1,159.4		$	1,030.2

Financial Instruments

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Financial Instruments

Debt Instruments

The carrying values of the Company’s debt instruments vary from their fair values. The fair values were determined by reference to the quoted market prices of these securities (Level 2 input based on the GAAP fair value hierarchy). The estimated fair value, as well as the carrying value, of the Company's debt instruments are shown below (in millions):



	September 30, 2017		December 31, 2016
Estimated aggregate fair value	$	2,037.8	$	2,004.8
Aggregate carrying value ⁽¹⁾	1,975.0		1,943.7

⁽¹⁾ Credit agreement and senior notes, excluding the impact of unamortized original issue discount and debt issuance costs

Accounts Receivable Factoring

One of the Company's European subsidiaries has an uncommitted factoring agreement, which provides for aggregate purchases of specified customer accounts of up to €200 million. As of September 30, 2017, there were no factored receivables outstanding. The Company cannot provide any assurances that this factoring facility will be available or utilized in the future.

Marketable Equity Securities

Included in other current assets in the accompanying condensed consolidated balance sheets as of September 30, 2017 and December 31, 2016, are $40.7 million and $30.2 million, respectively, of marketable equity securities, which the Company accounts for under the fair value option. Accordingly, unrealized gains and losses arising from changes in the fair value of the marketable equity securities are recognized in the accompanying condensed consolidated statement of income as a component of other expense, net. The fair value of the marketable equity securities is determined by reference to quoted market prices in active markets (Level 1 input based on the GAAP fair value hierarchy).

Derivative Instruments and Hedging Activities

The Company has used derivative financial instruments, including forwards, futures, options, swaps and other derivative contracts to reduce the effects of fluctuations in foreign exchange rates and interest rates and the resulting variability of the Company’s operating results. The Company is not a party to leveraged derivatives. The Company’s derivative financial instruments are subject to master netting arrangements that provide for the net settlement of contracts, by counterparty, in the event of default or termination. On the date that a derivative contract for a hedging instrument is entered into, the Company designates the derivative as either (1) a hedge of the exposure to changes in the fair value of a recognized asset or liability or of an unrecognized firm commitment (a fair value hedge), (2) a hedge of the exposure of a forecasted transaction or of the variability in the cash flows of a recognized asset or liability (a cash flow hedge), (3) a hedge of a net investment in a foreign operation (a net investment hedge) or (4) a contract not designated as a hedging instrument.

For a fair value hedge, both the effective and ineffective portions of the change in the fair value of the derivative are recorded in earnings and reflected in the condensed consolidated statement of income on the same line as the gain or loss on the hedged item attributable to the hedged risk. For a cash flow hedge, the effective portion of the change in the fair value of the derivative is recorded in accumulated other comprehensive loss in the condensed consolidated balance sheet. When the underlying hedged transaction is realized, the gain or loss included in accumulated other comprehensive loss is recorded in earnings and reflected in the condensed consolidated statement of income on the same line as the gain or loss on the hedged item attributable to the hedged risk. For a net investment hedge, the effective portion of the change in the fair value of the derivative is recorded in cumulative translation adjustment, which is a component of accumulated other comprehensive loss in the condensed consolidated balance sheet. In addition, changes in the fair value of contracts not designated as hedging instruments and the ineffective portion of both cash flow and net investment hedges are recorded in earnings and reflected in the condensed consolidated statement of income as other expense, net.

Foreign Exchange

The Company uses forwards, swaps and other derivative contracts to reduce the effects of fluctuations in foreign exchange rates on known foreign currency exposures. Gains and losses on the derivative instruments are intended to offset gains and losses on the hedged transaction in an effort to reduce exposure to fluctuations in foreign exchange rates. The principal currencies hedged by the Company include the Mexican peso, various European currencies, the Thai baht, the Japanese yen, the Canadian dollar and the Philippine peso.

The notional amount, estimated fair value and related balance sheet classification of the Company's foreign currency derivative contracts are shown below (in millions, except for maturities):



	September 30, 2017			December 31, 2016
Fair value of foreign currency contracts designated as cash flow hedges:
Other current assets	$	29.2		$	11.2
Other long-term assets	7.5			0.5
Other current liabilities	(14.7		)	(58.3		)
Other long-term liabilities	(2.5		)	(9.9		)
	19.5			(56.5		)
Notional amount	$	1,287.8		$	1,275.0
Outstanding maturities in months, not to exceed	24			24

Fair value of foreign currency contracts not designated as hedging instruments:
Other current assets	$	6.1		$	5.9
Other current liabilities	(4.2		)	(3.8		)
	1.9			2.1

Notional amount	$	1,020.3		$	681.2
Outstanding maturities in months, not to exceed	12			12

Total fair value	$	21.4		$	(54.4	)
Total notional amount	$	2,308.1		$	1,956.2

Foreign currency derivative contracts not designated as hedging instruments consist principally of hedges of cash transactions, intercompany loans and certain other balance sheet exposures.

Accumulated Other Comprehensive Loss - Derivative Instruments and Hedging

Pretax amounts related to foreign currency derivative contracts designated as cash flow hedges that were recognized in and reclassified from accumulated other comprehensive loss are shown below (in millions):



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017		October 1, 2016
Gains (losses) recognized in accumulated other comprehensive loss:	$	(5.5	)	$	(22.3	)	$	68.1	$	(77.2	)

(Gains) losses reclassified from accumulated other comprehensive loss to:
Net sales	0.8			2.2			1.4		3.6
Cost of sales	(4.6		)	20.9			6.5		59.3
	(3.8		)	23.1			7.9		62.9
Comprehensive income (loss)	$	(9.3	)	$	0.8		$	76.0	$	(14.3	)

As of September 30, 2017 and December 31, 2016, pretax net gains (losses) of approximately $19.5 million and ($56.5) million, respectively, related to the Company’s derivative instruments and hedging activities were recorded in accumulated other comprehensive loss. During the next twelve month period, the Company expects to reclassify into earnings net gains of approximately $14.6 million recorded in accumulated other comprehensive loss as of September 30, 2017. Such gains will be reclassified at the time that the underlying hedged transactions are realized.

During the three and nine months ended September 30, 2017 and October 1, 2016, amounts recognized in the accompanying condensed consolidated statements of comprehensive income related to changes in the fair value of cash flow and fair value hedges excluded from the Company’s effectiveness assessments and the ineffective portion of changes in the fair value of cash flow and fair value hedges were not material.

Fair Value Measurements

GAAP provides that fair value is an exit price, defined as a market-based measurement that represents the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value measurements are based on one or more of the following three valuation techniques:



Market:		This approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.

Income:		This approach uses valuation techniques to convert future amounts to a single present value amount based on current market expectations.

Cost:		This approach is based on the amount that would be required to replace the service capacity of an asset (replacement cost).

Further, GAAP prioritizes the inputs and assumptions used in the valuation techniques described above into a three-tier fair value hierarchy as follows:



Level 1:		Observable inputs, such as quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2:		Inputs, other than quoted market prices included in Level 1, that are observable either directly or indirectly for the asset or liability.

Level 3:		Unobservable inputs that reflect the entity’s own assumptions about the exit price of the asset or liability. Unobservable inputs may be used if there is little or no market data for the asset or liability at the measurement date.

The Company discloses fair value measurements and the related valuation techniques and fair value hierarchy level for its assets and liabilities that are measured or disclosed at fair value.

Items Measured at Fair Value on a Recurring Basis

Fair value measurements and the related valuation techniques and fair value hierarchy level for the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016, are shown below (in millions):



	September 30, 2017
	Frequency	Asset (Liability)		Valuation Technique	Level 1		Level 2		Level 3
Foreign currency contracts, net	Recurring	$	21.4	Market/ Income	$	—	$	21.4	$	—
Marketable equity securities	Recurring	$	40.7	Market	$	40.7	$	—	$	—



	December 31, 2016
	Frequency	Asset (Liability)			Valuation Technique	Level 1		Level 2			Level 3
Foreign currency contracts, net	Recurring	$	(54.4	)	Market/ Income	$	—	$	(54.4	)	$	—
Marketable equity securities	Recurring	$	30.2		Market	$	30.2	$	—		$	—

The Company determines the fair value of its derivative contracts using quoted market prices to calculate the forward values and then discounts such forward values to the present value. The discount rates used are based on quoted bank deposit or swap interest rates. If a derivative contract is in a net liability position, the Company adjusts these discount rates, if required, by an estimate of the credit spread that would be applied by market participants purchasing these contracts from the Company’s counterparties. If an estimate of the credit spread is required, the Company uses significant assumptions and factors other than quoted market rates, which would result in the classification of its derivative liabilities within Level 3 of the fair value hierarchy. As of September 30, 2017 and December 31, 2016, there were no derivative contracts that were classified within Level 3 of the fair value hierarchy. In addition, there were no transfers in or out of Level 3 of the fair value hierarchy in 2017.

Items Measured at Fair Value on a Non-Recurring Basis

The Company measures certain assets and liabilities at fair value on a non-recurring basis, which are not included in the table above. As these non-recurring fair value measurements are generally determined using unobservable inputs, these fair value measurements are classified within Level 3 of the fair value hierarchy.

As a result of the 2017 consolidation of Lear STEC, Level 3 fair value estimates of $16.2 million related to property, plant and equipment, $66.0 million related to customer-based intangible assets and $125.0 million related to redeemable noncontrolling interest are recorded in the accompanying condensed consolidated balance sheet as of September 30, 2017. In addition, the consolidation of Lear STEC required a Level 3 fair value estimate of $94.0 million related to the Company's previously held equity interest.

As a result of the 2017 acquisition of Antolin Seating, Level 3 fair value estimates of $81.7 million related to property, plant and equipment and $121.4 million related to intangible assets are recorded in the accompanying condensed consolidated balance sheet as of September 30, 2017.

As a result of the 2016 acquisition of AccuMED, Level 3 fair value estimates of $11.2 million and $13.9 million related to property, plant and equipment are recorded in the accompanying condensed consolidated balance sheets as of September 30, 2017 and December 31, 2016, respectively. Level 3 fair value estimates of $53.0 million related to intangible assets are recorded in the accompanying condensed consolidated balance sheets as of September 30, 2017 and December 31, 2016.

Fair value estimates of property, plant and equipment were based on independent appraisals, giving consideration to the highest and best use of the assets. Key assumptions used in the appraisals were based on a combination of market and cost approaches, as appropriate. Fair value estimates of customer-based intangible assets were based on the present value of future earnings attributable to the asset group after recognition of required returns to other contributory assets. Fair value estimates of redeemable noncontrolling and equity interests were based on the present value of future cash flows and a value to earnings multiple approach and reflect discounts for the lack of control and the lack of marketability associated with noncontrolling and equity interests. Further, the fair value estimate of the redeemable noncontrolling interest includes an estimate of the fair value associated with the noncontrolling interest holder's embedded redemption option. The fair value of this redemption option was determined using the Monte Carlo valuation model and includes various assumptions including the expected volatility, risk free rate and dividend yield.

For further information related to assets and liabilities measured at fair value on a non-recurring basis, see Note 2, “Acquisitions,” and Note 6, "Long-Term Assets."

As of September 30, 2017, there were no additional significant assets or liabilities measured at fair value on a non-recurring basis.

Accounting Pronouncements

9 Months Ended

Sep. 30, 2017

Accounting Changes and Error Corrections [Abstract]

Accounting Pronouncements

The Company has considered the ASUs issued by the Financial Accounting Standards Board ("FASB") summarized below, which could significantly impact its financial statements:



Standards Pending Adoption	Description	Effective Date	Anticipated Impact
ASU 2014-09, Revenue from Contracts with Customers ⁽¹⁾	The standard replaces existing revenue recognition guidance and requires additional financial statement disclosures. The provisions of these updates may be applied through either a full retrospective or a modified retrospective approach.	January 1, 2018	The Company is finalizing its review of the impact of adopting this standard and is developing and executing a comprehensive implementation plan. Reviews of a significant portion of commercial contracts have been completed and changes to processes and internal controls are being identified to meet the standard’s reporting and disclosure requirements. At this time, the Company does not believe that this standard will have a material effect on its revenues, results of operations or financial position. The Company expects to make additional disclosures related to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers as required by the new standard. The Company currently plans to adopt the new standard using the modified retrospective approach; however, a final decision regarding the adoption method has not been made at this time.
ASU 2016-02, Leases	The standard requires that a lessee recognize on its balance sheet right-of-use assets and corresponding liabilities resulting from leasing transactions, as well as additional financial statement disclosures. Currently, GAAP only requires balance sheet recognition for leases classified as capital leases. The provisions of this update apply to substantially all leased assets, with certain permitted exceptions, and must be adopted using a modified retrospective approach.	January 1, 2019	The Company is currently evaluating the impact of this update. For additional information on the Company’s operating lease commitments, see Note 11, "Commitments and Contingencies," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard was issued to address the net presentation of the components of net benefit cost. It requires the classification of service cost in the same line item as other current employee compensation costs. It also requires the presentation of the remaining components of net benefit cost in a separate line item outside any subtotal for income from operations.	January 1, 2018	The update will result in the retrospective reclassification of the non-service cost components of net benefit cost from cost of sales and selling, general and administrative expenses to other expense, net. There will be no impact on consolidated net income.

⁽¹⁾ Along with four subsequent ASUs amending and clarifying ASU 2014-09:

ASU 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date"

ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)"

ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing"

ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients"

In addition to the adoption of ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting," discussed in Note 11, "Income Taxes," the Company adopted the ASUs summarized below in 2017. The effects of adopting the ASUs listed below did not significantly impact the Company's financial statements:



Standard	Description	Effective Date
ASU 2015-11, Simplifying the Measurement of Inventory	The standard requires the measurement of inventory at the lower of cost or net realizable value rather than at the lower of cost or market.	January 1, 2017
ASU 2016-05, Effects of Derivative Contract Novations on Existing Hedge Accounting Relationships and ASU 2016-06, Contingent Put and Call Options in Debt Instruments.	The standards provide clarification when there is a change in a counterparty to a derivative hedging instrument and the steps required when assessing the economic characteristics of embedded put or call options.	January 1, 2017
ASU 2016-07, Simplifying the Transition to Equity Method of Accounting	The standard eliminates the requirement to retroactively apply the equity method of accounting as a result of an increase in the level of ownership or degree of influence.	January 1, 2017
ASU 2016-17, Interests Held through Related Parties that Are under Common Control	The standard changes the evaluation of whether a reporting entity is the primary beneficiary of a variable interest entity in certain instances involving entities under common control.	January 1, 2017

The Company has considered the recent ASUs summarized below, none of which are expected to significantly impact its financial statements:



Standard	Description	Effective Date
ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	The standard requires equity investments and other ownership interests in unconsolidated entities (other than those accounted for using the equity method of accounting) to be measured at fair value through earnings. A practicability exception exists for equity investments without readily determinable fair values.	January 1, 2018
ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments	The standard addresses the classification of cash flows related to various transactions, including debt prepayment and extinguishment costs, contingent consideration and proceeds from insurance claims.	January 1, 2018
ASU 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other than Inventory	The standard requires the recognition of the income tax effects of intercompany sales and transfers (other than inventory) when the sales and transfers occur.	January 1, 2018
ASU 2016-18, Restricted Cash	The standard provides guidance on the presentation of restricted cash on the statement of cash flows.	January 1, 2018
ASU 2017-01, Clarifying the Definition of a Business	The standard provides a new framework to use when determining if a set of assets and activities is a business.	January 1, 2018
ASU 2017-05, Gains and Losses from the Derecognition of Nonfinancial Assets	The standard provides guidance for recognizing gains and losses on nonfinancial assets (including land, buildings and intangible assets) to noncustomers. Adoption must coincide with ASU 2014-09.	January 1, 2018
ASU 2017-09, Stock Compensation - Scope of Modification Accounting	The standard provides guidance intended to reduce diversity in practice when accounting for a modification to the terms and conditions of a share-based payment award.	January 1, 2018
ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities	The standard contains changes intended to better portray the economic results of hedging activities, as well as targeted improvements to simplify hedge accounting.	January 1, 2019
ASU 2016-13, Measurement of Credit Losses on Financial Instruments	The standard changes the impairment model for most financial instruments to an "expected loss" model. The new model will generally result in earlier recognition of credit losses.	January 1, 2020
ASU 2017-04, Simplifying the Test for Goodwill Impairment	The standard simplifies the accounting for goodwill impairments and allows a goodwill impairment charge to be based on the amount of a reporting unit's carrying value in excess of its fair value. This eliminates the requirement to calculate the implied fair value of goodwill or what is known as "Step 2" under the current guidance.	January 1, 2020

Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Consolidation

The accompanying condensed consolidated financial statements include the accounts of Lear, a Delaware corporation, and the wholly owned and less than wholly owned subsidiaries controlled by Lear. In addition, Lear consolidates all entities, including variable interest entities, in which it has a controlling financial interest. Investments in affiliates in which Lear does not have control but does have the ability to exercise significant influence over operating and financial policies are accounted for under the equity method.

Fiscal period reporting

The Company’s annual financial results are reported on a calendar year basis, and quarterly interim results are reported using a thirteen week reporting calendar.

Reclassifications

Certain amounts in the prior period’s financial statements have been reclassified to conform to the presentation used in the quarter ended September 30, 2017.

Cost of sales

Cost of sales includes material, labor and overhead costs associated with the manufacture and distribution of the Company’s products. Distribution costs include inbound freight costs, purchasing and receiving costs, inspection costs, warehousing costs and other costs of the Company’s distribution network.

Selling, general and administrative expenses

Selling, general and administrative expenses include selling, engineering and development and administrative costs not directly associated with the manufacture and distribution of the Company’s products.

Restructuring costs

Pre-production costs related to long-term supply arrangement

Impairment of long-lived assets

Noncontrolling interest

Impairment of goodwill

Net income per share attributable to Lear

Marketable equity securities

Fair value of financial instruments



Market:		This approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.

Income:		This approach uses valuation techniques to convert future amounts to a single present value amount based on current market expectations.

Cost:		This approach is based on the amount that would be required to replace the service capacity of an asset (replacement cost).

Further, GAAP prioritizes the inputs and assumptions used in the valuation techniques described above into a three-tier fair value hierarchy as follows:



Level 1:		Observable inputs, such as quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2:		Inputs, other than quoted market prices included in Level 1, that are observable either directly or indirectly for the asset or liability.

Level 3:		Unobservable inputs that reflect the entity’s own assumptions about the exit price of the asset or liability. Unobservable inputs may be used if there is little or no market data for the asset or liability at the measurement date.

The Company discloses fair value measurements and the related valuation techniques and fair value hierarchy level for its assets and liabilities that are measured or disclosed at fair value.

New accounting pronouncements

The Company has considered the ASUs issued by the Financial Accounting Standards Board ("FASB") summarized below, which could significantly impact its financial statements:



Standards Pending Adoption	Description	Effective Date	Anticipated Impact
ASU 2014-09, Revenue from Contracts with Customers ⁽¹⁾	The standard replaces existing revenue recognition guidance and requires additional financial statement disclosures. The provisions of these updates may be applied through either a full retrospective or a modified retrospective approach.	January 1, 2018	The Company is finalizing its review of the impact of adopting this standard and is developing and executing a comprehensive implementation plan. Reviews of a significant portion of commercial contracts have been completed and changes to processes and internal controls are being identified to meet the standard’s reporting and disclosure requirements. At this time, the Company does not believe that this standard will have a material effect on its revenues, results of operations or financial position. The Company expects to make additional disclosures related to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers as required by the new standard. The Company currently plans to adopt the new standard using the modified retrospective approach; however, a final decision regarding the adoption method has not been made at this time.
ASU 2016-02, Leases	The standard requires that a lessee recognize on its balance sheet right-of-use assets and corresponding liabilities resulting from leasing transactions, as well as additional financial statement disclosures. Currently, GAAP only requires balance sheet recognition for leases classified as capital leases. The provisions of this update apply to substantially all leased assets, with certain permitted exceptions, and must be adopted using a modified retrospective approach.	January 1, 2019	The Company is currently evaluating the impact of this update. For additional information on the Company’s operating lease commitments, see Note 11, "Commitments and Contingencies," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard was issued to address the net presentation of the components of net benefit cost. It requires the classification of service cost in the same line item as other current employee compensation costs. It also requires the presentation of the remaining components of net benefit cost in a separate line item outside any subtotal for income from operations.	January 1, 2018	The update will result in the retrospective reclassification of the non-service cost components of net benefit cost from cost of sales and selling, general and administrative expenses to other expense, net. There will be no impact on consolidated net income.

⁽¹⁾ Along with four subsequent ASUs amending and clarifying ASU 2014-09:

ASU 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date"

ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)"

ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing"

ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients"



Standard	Description	Effective Date
ASU 2015-11, Simplifying the Measurement of Inventory	The standard requires the measurement of inventory at the lower of cost or net realizable value rather than at the lower of cost or market.	January 1, 2017
ASU 2016-05, Effects of Derivative Contract Novations on Existing Hedge Accounting Relationships and ASU 2016-06, Contingent Put and Call Options in Debt Instruments.	The standards provide clarification when there is a change in a counterparty to a derivative hedging instrument and the steps required when assessing the economic characteristics of embedded put or call options.	January 1, 2017
ASU 2016-07, Simplifying the Transition to Equity Method of Accounting	The standard eliminates the requirement to retroactively apply the equity method of accounting as a result of an increase in the level of ownership or degree of influence.	January 1, 2017
ASU 2016-17, Interests Held through Related Parties that Are under Common Control	The standard changes the evaluation of whether a reporting entity is the primary beneficiary of a variable interest entity in certain instances involving entities under common control.	January 1, 2017

The Company has considered the recent ASUs summarized below, none of which are expected to significantly impact its financial statements:



Standard	Description	Effective Date
ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	The standard requires equity investments and other ownership interests in unconsolidated entities (other than those accounted for using the equity method of accounting) to be measured at fair value through earnings. A practicability exception exists for equity investments without readily determinable fair values.	January 1, 2018
ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments	The standard addresses the classification of cash flows related to various transactions, including debt prepayment and extinguishment costs, contingent consideration and proceeds from insurance claims.	January 1, 2018
ASU 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other than Inventory	The standard requires the recognition of the income tax effects of intercompany sales and transfers (other than inventory) when the sales and transfers occur.	January 1, 2018
ASU 2016-18, Restricted Cash	The standard provides guidance on the presentation of restricted cash on the statement of cash flows.	January 1, 2018
ASU 2017-01, Clarifying the Definition of a Business	The standard provides a new framework to use when determining if a set of assets and activities is a business.	January 1, 2018
ASU 2017-05, Gains and Losses from the Derecognition of Nonfinancial Assets	The standard provides guidance for recognizing gains and losses on nonfinancial assets (including land, buildings and intangible assets) to noncustomers. Adoption must coincide with ASU 2014-09.	January 1, 2018
ASU 2017-09, Stock Compensation - Scope of Modification Accounting	The standard provides guidance intended to reduce diversity in practice when accounting for a modification to the terms and conditions of a share-based payment award.	January 1, 2018
ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities	The standard contains changes intended to better portray the economic results of hedging activities, as well as targeted improvements to simplify hedge accounting.	January 1, 2019
ASU 2016-13, Measurement of Credit Losses on Financial Instruments	The standard changes the impairment model for most financial instruments to an "expected loss" model. The new model will generally result in earlier recognition of credit losses.	January 1, 2020
ASU 2017-04, Simplifying the Test for Goodwill Impairment	The standard simplifies the accounting for goodwill impairments and allows a goodwill impairment charge to be based on the amount of a reporting unit's carrying value in excess of its fair value. This eliminates the requirement to calculate the implied fair value of goodwill or what is known as "Step 2" under the current guidance.	January 1, 2020

Acquisitions (Tables)

9 Months Ended

Sep. 30, 2017

Purchase Price and Related Allocation

A preliminary summary of the fair value of the assets acquired and liabilities assumed in conjunction with the consolidation is shown below (in millions):



Property, plant and equipment	$	16.2
Other assets and liabilities assumed, net	42.7
Goodwill	94.1
Intangible assets	66.0
	$	219.0

Antolin Seating

Purchase Price and Related Allocation

The purchase price and preliminary allocation are shown below (in millions):



Purchase price paid, net of cash acquired	$	286.8
Acquisition date contingent consideration	4.7
Net purchase price	$	291.5

Property, plant and equipment	$	81.7
Other assets purchased and liabilities assumed, net	(34.2		)
Goodwill	122.6
Intangible assets	121.4
Preliminary purchase price allocation	$	291.5

AccuMED

Purchase Price and Related Allocation

The purchase price and preliminary allocation are shown below (in millions):



Purchase price paid, net of cash acquired	$	148.5

Property, plant and equipment	$	11.2
Other assets purchased and liabilities assumed, net	7.2
Goodwill	77.1
Intangible assets	53.0
Preliminary purchase price allocation	$	148.5

Restructuring (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Summary of Restructuring Activity

A summary of 2017 activity, excluding the pension benefit plan settlement loss of $0.8 million (Note 9, "Pension and Other Postretirement Benefit Plans"), is shown below (in millions):



	Accrual as of		2017		Utilization						Accrual as of
	January 1, 2017		Charges		Cash			Non-cash			September 30, 2017
Employee termination benefits	$	69.4	$	41.0	$	(27.7	)	$	—		$	82.7
Asset impairment charges	—		0.4		—			(0.4		)	—
Contract termination costs	4.6		1.5		(1.2		)	—			4.9
Other related costs	—		4.9		(4.9		)	—			—
Total	$	74.0	$	47.8	$	(33.8	)	$	(0.4	)	$	87.6

Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

A summary of inventories is shown below (in millions):



	September 30, 2017		December 31, 2016
Raw materials	$	909.2	$	746.3
Work-in-process	124.0		106.4
Finished goods	199.7		167.9
Inventories	$	1,232.9	$	1,020.6

Pre-Production Costs Related to Long-Term Supply Agreements (Tables)

9 Months Ended

Sep. 30, 2017

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Classification of Recoverable Customer Engineering, Development and Tooling Costs Related to Long-term Supply Agreements

The classification of recoverable customer E&D and tooling costs related to long-term supply agreements is shown below (in millions):



	September 30, 2017		December 31, 2016
Current	$	232.5	$	185.9
Long-term	54.0		43.4
Recoverable customer E&D and tooling	$	286.5	$	229.3

Long-Term Assets (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

A summary of property, plant and equipment is shown below (in millions):



	September 30, 2017			December 31, 2016
Land	$	119.1		$	101.7
Buildings and improvements	772.2			648.1
Machinery and equipment	2,939.2			2,459.6
Construction in progress	348.1			296.4
Total property, plant and equipment	4,178.6			3,505.8
Less – accumulated depreciation	(1,800.5		)	(1,486.5		)
Property, plant and equipment, net	$	2,378.1		$	2,019.3

Preliminary Summary of the Fair Value of Assets Acquired and Liabilities Assumed

A preliminary summary of the fair value of the assets acquired and liabilities assumed in conjunction with the consolidation is shown below (in millions):



Property, plant and equipment	$	16.2
Other assets and liabilities assumed, net	42.7
Goodwill	94.1
Intangible assets	66.0
	$	219.0

Goodwill (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

A summary of the changes in the carrying amount of goodwill, by operating segment, in the nine months ended September 30, 2017, is shown below (in millions):



	Seating		E-Systems		Total
Balance at January 1, 2017	$	1,091.2	$	30.1	$	1,121.3
Acquisition	122.6		—		122.6
Consolidation of affiliate	—		94.1		94.1
Foreign currency translation and other	48.9		0.2		49.1
Balance at September 30, 2017	$	1,262.7	$	124.4	$	1,387.1

Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Summary of Long-Term Debt

The range and the rate as of September 30, 2017, are as follows (in percentages):



	Eurocurrency Rate						Base Rate
	Minimum		Maximum		Rate as of September 30, 2017		Minimum		Maximum		Rate as of September 30, 2017
Revolving Credit Agreement	1.00	%	1.60	%	1.30	%	0.00	%	0.60	%	0.30	%
Term Loan Facility	1.125	%	1.90	%	1.50	%	0.125	%	0.90	%	0.50	%

A summary of long-term debt, net of unamortized debt issuance costs, and the related weighted average interest rates is shown below (in millions):



	September 30, 2017									December 31, 2016
Debt Instrument	Long-Term Debt		Debt Issuance Costs ⁽²⁾			Long-Term Debt, Net			Weighted Average Interest Rate	Long-Term Debt		Debt Issuance Costs⁽²⁾			Long-Term Debt, Net			Weighted Average Interest Rate
Credit Agreement — Term Loan Facility	$	250.0	$	(1.9	)	$	248.1		2.7%	$	468.7	$	(1.6	)	$	467.1		2.105%
4.75% Senior Notes due 2023 ("2023 Notes")	—		—			—			N/A	500.0		(4.8		)	495.2			4.75%
5.375% Senior Notes due 2024 ("2024 Notes")	325.0		(2.5		)	322.5			5.375%	325.0		(2.8		)	322.2			5.375%
5.25% Senior Notes due 2025 ("2025 Notes")	650.0		(6.0		)	644.0			5.25%	650.0		(6.6		)	643.4			5.25%
3.8% Senior Notes due 2027 ("2027 Notes") ⁽¹⁾	744.8		(6.0		)	738.8			3.885%	—		—			—			N/A
Other	8.6		—			8.6			N/A	5.7		—			5.7			N/A
	$	1,978.4	$	(16.4	)	1,962.0				$	1,949.4	$	(15.8	)	1,933.6
Less — Current portion						(9.0		)							(35.6		)
Long-term debt						$	1,953.0								$	1,898.0

⁽¹⁾ Net of unamortized discount of $5.2 million

⁽²⁾ Unamortized portion

Senior Notes

The issuance date, maturity date and interest payable dates of the Company's senior unsecured 2024 Notes, 2025 Notes and 2027 Notes (together, the "Notes") are as shown below:



Note	Issuance Date	Maturity Date	Interest Payable Dates
2024 Notes	March 2014	March 15, 2024	March 15 and September 15
2025 Notes	November 2014	January 15, 2025	January 15 and July 15
2027 Notes	August 2017	September 15, 2027	March 15 and September 15

Schedule of Maturities of Long-term Debt

As of September 30, 2017, scheduled maturities related to the Term Loan Facility for the five succeeding years, as of the date of this Report, are shown below (in millions):



2017 ⁽¹⁾	$	1.6
2018	6.3
2019	7.8
2020	14.0
2021	14.0
2022	206.3

⁽¹⁾ Scheduled maturities for the fourth quarter of 2017

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Pension

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Components of net periodic benefit (credit) cost

The components of the Company’s net periodic pension benefit cost are shown below (in millions):



	Three Months Ended												Nine Months Ended
	September 30, 2017						October 1, 2016						September 30, 2017						October 1, 2016
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign			U.S.			Foreign
Service cost	$	1.3		$	1.8		$	1.4		$	1.6		$	3.8		$	5.3		$	4.2		$	4.8
Interest cost	5.5			4.0			7.5			3.8			16.4			11.2			22.4			11.9
Expected return on plan assets	(7.3		)	(5.9		)	(9.5		)	(5.9		)	(21.7		)	(17.0		)	(28.6		)	(17.5		)
Amortization of actuarial loss	0.6			1.3			0.6			0.8			1.9			3.8			2.0			2.3
Settlement loss	—			—			—			—			0.2			0.8			0.2			—
Net periodic benefit cost	$	0.1		$	1.2		$	—		$	0.3		$	0.6		$	4.1		$	0.2		$	1.5

Other postretirement

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Components of net periodic benefit (credit) cost

The components of the Company’s net periodic other postretirement benefit (credit) cost are shown below (in millions):



	Three Months Ended												Nine Months Ended
	September 30, 2017						October 1, 2016						September 30, 2017						October 1, 2016
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign			U.S.			Foreign
Service cost	$	—		$	0.1		$	—		$	0.1		$	0.1		$	0.4		$	0.1		$	0.4
Interest cost	0.6			0.4			0.9			0.4			1.8			1.2			2.4			1.2
Amortization of actuarial (gain) loss	(0.7		)	0.1			(0.3		)	0.1			(2.0		)	0.2			(0.9		)	0.2
Amortization of prior service credit	—			(0.1		)	—			(0.1		)	—			(0.3		)	—			(0.3		)
Special termination benefits	—			—			—			—			—			0.1			—			0.3
Net periodic benefit (credit) cost	$	(0.1	)	$	0.5		$	0.6		$	0.5		$	(0.1	)	$	1.6		$	1.6		$	1.8

Other (Income) Expense, Net (Tables)

9 Months Ended

Sep. 30, 2017

Other Income and Expenses [Abstract]

Summary of Other (Income) Expense, Net

A summary of other (income) expense, net is shown below (in millions):



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Other expense	$	34.4		$	15.5		$	47.2		$	34.7
Other income	(56.2		)	(1.3		)	(59.5		)	(35.5		)
Other (income) expense, net	$	(21.8	)	$	14.2		$	(12.3	)	$	(0.8	)

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Provision for Income Taxes and Corresponding Effective Tax Rate



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017			October 1, 2016
Provision for income taxes	$	77.8		$	88.2		$	240.2		$	287.4
Pretax income before equity in net income of affiliates	$	385.3		$	310.3		$	1,159.4		$	1,030.2
Effective tax rate	20.2		%	28.4		%	20.7		%	27.9		%

Net Income Per Share Attributable to Lear (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Summary of Information Used to Compute Basic and Diluted Net Income Per Share

A summary of information used to compute basic and diluted net income per share available to Lear common stockholders is shown below (in millions, except share and per share data):



	Three Months Ended					Nine Months Ended
	September 30, 2017			October 1, 2016		September 30, 2017			October 1, 2016
Net income attributable to Lear	$	295.2		$	214.4	$	912.9		$	745.2
Less: Redeemable noncontrolling interest adjustment	(22.7		)	—		(22.7		)	—
Net income available to Lear common stockholders	$	272.5		$	214.4	$	890.2		$	745.2

Average common shares outstanding	68,061,718			71,259,766		68,874,682			73,102,327
Dilutive effect of common stock equivalents	772,561			792,504		662,126			706,893
Average diluted shares outstanding	68,834,279			72,052,270		69,536,808			73,809,220

Basic net income per share available to Lear common stockholders	$	4.00		$	3.01	$	12.92		$	10.19

Diluted net income per share available to Lear common stockholders	$	3.96		$	2.98	$	12.80		$	10.10

Comprehensive Income and Equity (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Summary of Comprehensive Income and Reconciliations of Equity



	Three Months Ended October 1, 2016									Nine Months Ended October 1, 2016
	Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests			Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests
Beginning equity balance	$	3,156.1		$	3,012.8		$	143.3		$	3,017.7		$	2,927.4		$	90.3
Stock-based compensation transactions	15.6			15.6			—			6.7			6.7			—
Repurchase of common stock	(152.7		)	(152.7		)	—			(557.7		)	(557.7		)	—
Dividends declared to Lear Corporation stockholders	(21.9		)	(21.9		)	—			(67.5		)	(67.5		)	—
Dividends declared to noncontrolling interest holders	(0.4		)	—			(0.4		)	(13.2		)	—			(13.2		)
Consolidation of affiliate	1.0			—			1.0			41.0			—			41.0
Non-controlling interests — other	—			—			—			—			(2.2		)	2.2
Comprehensive income:
Net income	235.0			214.4			20.6			792.0			745.2			46.8
Other comprehensive income (loss), net of tax:
Defined benefit plan adjustments	1.5			1.5			—			(0.2		)	(0.2		)	—
Derivative instruments and hedging activities	0.8			0.8			—			(10.6		)	(10.6		)	—
Foreign currency translation adjustments	8.0			8.0			—			34.8			37.4			(2.6		)
Other comprehensive income (loss)	10.3			10.3			—			24.0			26.6			(2.6		)
Comprehensive income	245.3			224.7			20.6			816.0			771.8			44.2
Ending equity balance	$	3,243.0		$	3,078.5		$	164.5		$	3,243.0		$	3,078.5		$	164.5



	Three Months Ended September 30, 2017									Nine Months Ended September 30, 2017
	Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests			Equity			Lear Corporation Stockholders' Equity			Non- controlling Interests
Beginning equity balance	$	3,756.2		$	3,621.9		$	134.3		$	3,192.9		$	3,057.2		$	135.7
Stock-based compensation transactions	14.9			14.9			—			8.4			8.4			—
Repurchase of common stock	(77.9		)	(77.9		)	—			(332.2		)	(332.2		)	—
Dividends declared to Lear Corporation stockholders	(34.8		)	(34.8		)	—			(105.8		)	(105.8		)	—
Dividends declared to noncontrolling interest holders	(0.7		)	—			(0.7		)	(33.2		)	—			(33.2		)
Adoption of ASU 2016-09 (Note 11, "Taxes")	—			—			—			54.5			54.5			—
Redeemable non-controlling interest adjustment	(22.7		)	(22.7		)	—			(22.7		)	(22.7		)	—
Comprehensive income:
Net income	315.0			295.2			19.8			960.5			912.9			47.6
Other comprehensive income, net of tax:
Defined benefit plan adjustments	(1.8		)	(1.8		)	—			(3.0		)	(3.0		)	—
Derivative instruments and hedging activities	(10.8		)	(10.8		)	—			57.2			57.2			—
Foreign currency translation adjustments	89.9			87.1			2.8			250.7			244.6			6.1
Other comprehensive income	77.3			74.5			2.8			304.9			298.8			6.1
Comprehensive income	392.3			369.7			22.6			1,265.4			1,211.7			53.7
Ending equity balance	$	4,027.3		$	3,871.1		$	156.2		$	4,027.3		$	3,871.1		$	156.2

Summary of Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax

A summary of changes, net of tax, in accumulated other comprehensive loss for the three and nine months ended September 30, 2017, is shown below (in millions):



	Three Months Ended September 30, 2017			Nine Months Ended September 30, 2017
Defined benefit plans:
Balance at beginning of period	$	(194.0	)	$	(192.8	)
Reclassification adjustments (net of tax expense of $0.3 million and $1.2 million in the three and nine months ended September 30, 2017, respectively)	0.9			3.4
Other comprehensive loss recognized during the period (net of tax impact of $— million in the three and nine months ended September 30, 2017)	(2.7		)	(6.4		)
Balance at end of period	$	(195.8	)	$	(195.8	)

Derivative instruments and hedging:
Balance at beginning of period	$	22.9		$	(45.1	)
Reclassification adjustments (net of tax benefit of $1.0 million and tax expense of $1.9 million in the three and nine months ended September 30, 2017, respectively)	(3.1		)	5.7
Other comprehensive income (loss) recognized during the period (net of tax benefit of $3.2 million and tax expense of $16.6 million in the three and nine months ended September 30, 2017, respectively)	(7.7		)	51.5
Balance at end of period	$	12.1		$	12.1

Foreign currency translation:
Balance at beginning of period	$	(440.2	)	$	(597.7	)
Other comprehensive income recognized during the period (net of tax impact of $— million in the three and nine months ended September 30, 2017)	87.1			244.6
Balance at end of period	$	(353.1	)	$	(353.1	)

A summary of changes, net of tax, in accumulated other comprehensive loss for the three and nine months ended October 1, 2016, is shown below (in millions):



	Three Months Ended October 1, 2016			Nine Months Ended October 1, 2016
Defined benefit plans:
Balance at beginning of period	$	(196.3	)	$	(194.6	)
Reclassification adjustments (net of tax expense of $0.3 million and $1.0 million in the three and nine months ended October 1, 2016, respectively)	0.8			2.5
Other comprehensive income (loss) recognized during the period (net of tax impact of $— million in the three and nine months ended October 1, 2016)	0.7			(2.7		)
Balance at end of period	$	(194.8	)	$	(194.8	)

Derivative instruments and hedging:
Balance at beginning of period	$	(50.1	)	$	(38.7	)
Reclassification adjustments (net of tax expense of $6.0 million and $16.7 million in the three and nine months ended October 1, 2016, respectively)	17.1			46.2
Other comprehensive loss recognized during the period (net of tax benefit of $6.0 million and $20.5 million in the three and nine months ended October 1, 2016, respectively)	(16.3		)	(56.8		)
Balance at end of period	$	(49.3	)	$	(49.3	)

Foreign currency translation:
Balance at beginning of period	$	(467.4	)	$	(496.8	)
Other comprehensive income recognized during the period (net of tax impact of $— million in the three and nine months ended October 1, 2016)	8.0			37.4
Balance at end of period	$	(459.4	)	$	(459.4	)

Legal and Other Contingencies (Tables)

9 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Summary of Changes in Reserves for Product Liability and Warranty Claims

A summary of the changes in reserves for product liability and warranty claims for the nine months ended September 30, 2017, is shown below (in millions):



Balance at January 1, 2017	$	49.1
Expense, net (including changes in estimates)	12.5
Settlements	(15.5		)
Foreign currency translation and other	3.0
Balance at September 30, 2017	$	49.1

Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Summary of Revenue by Reportable Operating Segment

A summary of revenues from external customers and other financial information by reportable operating segment is shown below (in millions):



	Three Months Ended September 30, 2017
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	3,868.9	$	1,112.6	$	—		$	4,981.5
Segment earnings ⁽¹⁾	298.8		155.5		(69.1		)	385.2
Depreciation and amortization	76.7		31.3		3.7			111.7
Capital expenditures	109.7		42.7		3.8			156.2
Total assets	7,413.5		2,262.7		2,035.8			11,712.0



	Three Months Ended October 1, 2016
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	3,513.3	$	1,013.1	$	—		$	4,526.4
Segment earnings ⁽¹⁾	269.5		140.3		(64.7		)	345.1
Depreciation and amortization	67.9		27.5		3.3			98.7
Capital expenditures	80.3		34.9		3.4			118.6
Total assets	6,348.8		1,746.6		2,182.0			10,277.4



	Nine Months Ended September 30, 2017
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	11,762.0	$	3,341.2	$	—		$	15,103.2
Segment earnings ⁽¹⁾	941.8		476.7		(207.5		)	1,211.0
Depreciation and amortization	213.2		89.0		11.0			313.2
Capital expenditures	287.1		126.2		16.9			430.2
Total assets	7,413.5		2,262.7		2,035.8			11,712.0



	Nine Months Ended October 1, 2016
	Seating		E-Systems		Other			Consolidated
Revenues from external customers	$	10,755.7	$	3,158.4	$	—		$	13,914.1
Segment earnings ⁽¹⁾	848.8		441.5		(198.9		)	1,091.4
Depreciation and amortization	193.8		80.5		9.1			283.4
Capital expenditures	204.6		79.5		16.2			300.3
Total assets	6,348.8		1,746.6		2,182.0			10,277.4

⁽¹⁾See definition above

Reconciliation of Consolidated Segment Earnings to Consolidated Income Before Provision for Income Taxes and Equity

A reconciliation of segment earnings to consolidated income before provision for income taxes and equity in net income of affiliates is shown below (in millions):



	Three Months Ended					Nine Months Ended
	September 30, 2017			October 1, 2016		September 30, 2017			October 1, 2016
Segment earnings	$	385.2		$	345.1	$	1,211.0		$	1,091.4
Interest expense	21.7			20.6		63.9			62.0
Other (income) expense, net	(21.8		)	14.2		(12.3		)	(0.8		)
Consolidated income before provision for income taxes and equity in net income of affiliates	$	385.3		$	310.3	$	1,159.4		$	1,030.2

Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Estimated Aggregate Fair Value and Aggregate Carrying Value of Debt Instruments

The estimated fair value, as well as the carrying value, of the Company's debt instruments are shown below (in millions):



	September 30, 2017		December 31, 2016
Estimated aggregate fair value	$	2,037.8	$	2,004.8
Aggregate carrying value ⁽¹⁾	1,975.0		1,943.7

⁽¹⁾ Credit agreement and senior notes, excluding the impact of unamortized original issue discount and debt issuance costs

Notional Amount, Estimated Fair Value and Related Balance Sheet Classification of Foreign Currency Derivative Contracts

The notional amount, estimated fair value and related balance sheet classification of the Company's foreign currency derivative contracts are shown below (in millions, except for maturities):



	September 30, 2017			December 31, 2016
Fair value of foreign currency contracts designated as cash flow hedges:
Other current assets	$	29.2		$	11.2
Other long-term assets	7.5			0.5
Other current liabilities	(14.7		)	(58.3		)
Other long-term liabilities	(2.5		)	(9.9		)
	19.5			(56.5		)
Notional amount	$	1,287.8		$	1,275.0
Outstanding maturities in months, not to exceed	24			24

Fair value of foreign currency contracts not designated as hedging instruments:
Other current assets	$	6.1		$	5.9
Other current liabilities	(4.2		)	(3.8		)
	1.9			2.1

Notional amount	$	1,020.3		$	681.2
Outstanding maturities in months, not to exceed	12			12

Total fair value	$	21.4		$	(54.4	)
Total notional amount	$	2,308.1		$	1,956.2

Pretax Amounts Related to Foreign Currency Derivative Contracts



	Three Months Ended						Nine Months Ended
	September 30, 2017			October 1, 2016			September 30, 2017		October 1, 2016
Gains (losses) recognized in accumulated other comprehensive loss:	$	(5.5	)	$	(22.3	)	$	68.1	$	(77.2	)

(Gains) losses reclassified from accumulated other comprehensive loss to:
Net sales	0.8			2.2			1.4		3.6
Cost of sales	(4.6		)	20.9			6.5		59.3
	(3.8		)	23.1			7.9		62.9
Comprehensive income (loss)	$	(9.3	)	$	0.8		$	76.0	$	(14.3	)

Fair Value Measurements and Related Valuation Techniques and Fair Value Hierarchy Level



	September 30, 2017
	Frequency	Asset (Liability)		Valuation Technique	Level 1		Level 2		Level 3
Foreign currency contracts, net	Recurring	$	21.4	Market/ Income	$	—	$	21.4	$	—
Marketable equity securities	Recurring	$	40.7	Market	$	40.7	$	—	$	—



	December 31, 2016
	Frequency	Asset (Liability)			Valuation Technique	Level 1		Level 2			Level 3
Foreign currency contracts, net	Recurring	$	(54.4	)	Market/ Income	$	—	$	(54.4	)	$	—
Marketable equity securities	Recurring	$	30.2		Market	$	30.2	$	—		$	—

Accounting Pronouncements (Tables)

9 Months Ended

Sep. 30, 2017

Accounting Changes and Error Corrections [Abstract]

Schedule of Recent Accounting Standards Updates

The Company has considered the ASUs issued by the Financial Accounting Standards Board ("FASB") summarized below, which could significantly impact its financial statements:



Standards Pending Adoption	Description	Effective Date	Anticipated Impact
ASU 2014-09, Revenue from Contracts with Customers ⁽¹⁾	The standard replaces existing revenue recognition guidance and requires additional financial statement disclosures. The provisions of these updates may be applied through either a full retrospective or a modified retrospective approach.	January 1, 2018	The Company is finalizing its review of the impact of adopting this standard and is developing and executing a comprehensive implementation plan. Reviews of a significant portion of commercial contracts have been completed and changes to processes and internal controls are being identified to meet the standard’s reporting and disclosure requirements. At this time, the Company does not believe that this standard will have a material effect on its revenues, results of operations or financial position. The Company expects to make additional disclosures related to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers as required by the new standard. The Company currently plans to adopt the new standard using the modified retrospective approach; however, a final decision regarding the adoption method has not been made at this time.
ASU 2016-02, Leases	The standard requires that a lessee recognize on its balance sheet right-of-use assets and corresponding liabilities resulting from leasing transactions, as well as additional financial statement disclosures. Currently, GAAP only requires balance sheet recognition for leases classified as capital leases. The provisions of this update apply to substantially all leased assets, with certain permitted exceptions, and must be adopted using a modified retrospective approach.	January 1, 2019	The Company is currently evaluating the impact of this update. For additional information on the Company’s operating lease commitments, see Note 11, "Commitments and Contingencies," to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.
ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	The standard was issued to address the net presentation of the components of net benefit cost. It requires the classification of service cost in the same line item as other current employee compensation costs. It also requires the presentation of the remaining components of net benefit cost in a separate line item outside any subtotal for income from operations.	January 1, 2018	The update will result in the retrospective reclassification of the non-service cost components of net benefit cost from cost of sales and selling, general and administrative expenses to other expense, net. There will be no impact on consolidated net income.

⁽¹⁾ Along with four subsequent ASUs amending and clarifying ASU 2014-09:

ASU 2015-14, "Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date"

ASU 2016-08, "Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)"

ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing"

ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients"



Standard	Description	Effective Date
ASU 2015-11, Simplifying the Measurement of Inventory	The standard requires the measurement of inventory at the lower of cost or net realizable value rather than at the lower of cost or market.	January 1, 2017
ASU 2016-05, Effects of Derivative Contract Novations on Existing Hedge Accounting Relationships and ASU 2016-06, Contingent Put and Call Options in Debt Instruments.	The standards provide clarification when there is a change in a counterparty to a derivative hedging instrument and the steps required when assessing the economic characteristics of embedded put or call options.	January 1, 2017
ASU 2016-07, Simplifying the Transition to Equity Method of Accounting	The standard eliminates the requirement to retroactively apply the equity method of accounting as a result of an increase in the level of ownership or degree of influence.	January 1, 2017
ASU 2016-17, Interests Held through Related Parties that Are under Common Control	The standard changes the evaluation of whether a reporting entity is the primary beneficiary of a variable interest entity in certain instances involving entities under common control.	January 1, 2017

The Company has considered the recent ASUs summarized below, none of which are expected to significantly impact its financial statements:



Standard	Description	Effective Date
ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	The standard requires equity investments and other ownership interests in unconsolidated entities (other than those accounted for using the equity method of accounting) to be measured at fair value through earnings. A practicability exception exists for equity investments without readily determinable fair values.	January 1, 2018
ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments	The standard addresses the classification of cash flows related to various transactions, including debt prepayment and extinguishment costs, contingent consideration and proceeds from insurance claims.	January 1, 2018
ASU 2016-16, Income Taxes - Intra-Entity Transfers of Assets Other than Inventory	The standard requires the recognition of the income tax effects of intercompany sales and transfers (other than inventory) when the sales and transfers occur.	January 1, 2018
ASU 2016-18, Restricted Cash	The standard provides guidance on the presentation of restricted cash on the statement of cash flows.	January 1, 2018
ASU 2017-01, Clarifying the Definition of a Business	The standard provides a new framework to use when determining if a set of assets and activities is a business.	January 1, 2018
ASU 2017-05, Gains and Losses from the Derecognition of Nonfinancial Assets	The standard provides guidance for recognizing gains and losses on nonfinancial assets (including land, buildings and intangible assets) to noncustomers. Adoption must coincide with ASU 2014-09.	January 1, 2018
ASU 2017-09, Stock Compensation - Scope of Modification Accounting	The standard provides guidance intended to reduce diversity in practice when accounting for a modification to the terms and conditions of a share-based payment award.	January 1, 2018
ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities	The standard contains changes intended to better portray the economic results of hedging activities, as well as targeted improvements to simplify hedge accounting.	January 1, 2019
ASU 2016-13, Measurement of Credit Losses on Financial Instruments	The standard changes the impairment model for most financial instruments to an "expected loss" model. The new model will generally result in earlier recognition of credit losses.	January 1, 2020
ASU 2017-04, Simplifying the Test for Goodwill Impairment	The standard simplifies the accounting for goodwill impairments and allows a goodwill impairment charge to be based on the amount of a reporting unit's carrying value in excess of its fair value. This eliminates the requirement to calculate the implied fair value of goodwill or what is known as "Step 2" under the current guidance.	January 1, 2020

Acquisitions - Additional Information (Details) $ in Millions			3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 28, 2017 USD ($) country	Dec. 21, 2016 USD ($)	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Annual sales			$ 4,981.5	$ 4,526.4	$ 15,103.2	$ 13,914.1
Purchase price, cash paid net of cash acquired					286.8	$ 0.0
Antolin Seating
Business Acquisition [Line Items]
Number of countries with operations \| country	5
Annual sales							$ 370.0
AccuMED
Business Acquisition [Line Items]
Annual sales							$ 80.0
Antolin Seating
Business Acquisition [Line Items]
Net purchase price	$ 291.5
Purchase price, cash paid net of cash acquired	286.8
Purchase price, contingent consideration	4.7
Transaction costs expensed					$ 3.1
Value of estimated contingent consideration	$ 4.7
AccuMED
Business Acquisition [Line Items]
Purchase price, cash paid net of cash acquired		$ 148.5
Percentage of outstanding equity interests acquired		100.00%
Customer relationships \| Antolin Seating
Business Acquisition [Line Items]
Acquired intangible assets, weighted average useful life	15 years
Customer relationships \| AccuMED
Business Acquisition [Line Items]
Acquired intangible assets, weighted average useful life		13 years

Acquisitions - Purchase Price and Related Allocation (Details) - USD ($)
$ in Millions

9 Months Ended

Apr. 28, 2017

Dec. 21, 2016

Sep. 30, 2017

Oct. 01, 2016

Dec. 31, 2016

Purchase price paid, net of cash acquired

$ 286.8

$ 0.0

$ 1,387.1

^[1]

$ 1,121.3

Antolin Seating

Purchase price paid, net of cash acquired

$ 286.8

Acquisition date contingent consideration

4.7

Net purchase price

291.5

Other assets purchased and liabilities assumed, net

81.7

(34.2)

Preliminary purchase price allocation

122.6

Intangible assets

121.4

$ 291.5

AccuMED

Purchase price paid, net of cash acquired

$ 148.5

Other assets purchased and liabilities assumed, net

11.2

7.2

Preliminary purchase price allocation

77.1

Intangible assets

53.0

$ 148.5

[1]	Unaudited.

Restructuring - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and settlement charges			$ 48.6
Restructuring charges (credits)			47.8
Carrying values in excess of estimated fair values	$ 0.4		0.4
Expected restructuring cost	36.0		36.0
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)			41.0
Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)			0.4	$ 3.5
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)			1.5
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)			4.9
Foreign \| Pension
Restructuring Cost and Reserve [Line Items]
Pension settlement loss	$ 0.0	$ 0.0	0.8	$ 0.0
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring and settlement charges			39.5
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and settlement charges			10.2
Other income
Restructuring Cost and Reserve [Line Items]
Restructuring and settlement charges			$ (1.1)

Restructuring - Summary of Restructuring Activities (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	$ 74.0
2017 charges	47.8
Utilization cash	(33.8)
Utilization, Non-cash	(0.4)
Accrual as of end of period	87.6
Employee termination benefits
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	69.4
2017 charges	41.0
Utilization cash	(27.7)
Utilization, Non-cash	0.0
Accrual as of end of period	82.7
Asset impairment charges
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2017 charges	0.4	$ 3.5
Utilization cash	0.0
Utilization, Non-cash	(0.4)
Accrual as of end of period	0.0
Contract termination costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	4.6
2017 charges	1.5
Utilization cash	(1.2)
Utilization, Non-cash	0.0
Accrual as of end of period	4.9
Other related costs
Restructuring Reserve [Roll Forward]
Accrual as of beginning of period	0.0
2017 charges	4.9
Utilization cash	(4.9)
Utilization, Non-cash	0.0
Accrual as of end of period	$ 0.0

Inventories (Detail) - USD ($)
$ in Millions

Sep. 30, 2017

Dec. 31, 2016

Inventory Disclosure [Abstract]

Raw materials

$ 909.2

$ 746.3

Work-in-process

124.0

106.4

Finished goods

199.7

167.9

Property, Plant and Equipment [Abstract]

$ 1,232.9

^[1]

$ 1,020.6

[1]	Unaudited.

Pre-Production Costs Related to Long-Term Supply Agreements (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Pre Production Costs Related to Long Term Supply Arrangements [Line Items]
Pre-production E&D costs for which reimbursement is contractually guaranteed by the customer	$ 190.8	$ 110.5
Pre-production tooling costs related to customer-owned tools for which reimbursement is contractually guaranteed by the customer	93.5	61.5
Cash collected related to E&D and tooling costs	247.7	$ 168.9
Recoverable customer E&D and tooling	286.5		$ 229.3
Current
Pre Production Costs Related to Long Term Supply Arrangements [Line Items]
Recoverable customer E&D and tooling	232.5		185.9
Long-term
Pre Production Costs Related to Long Term Supply Arrangements [Line Items]
Recoverable customer E&D and tooling	$ 54.0		$ 43.4

Long-Term Assets - Property, Plant and Equipment (Detail) - USD ($)
$ in Millions

Sep. 30, 2017

Dec. 31, 2016

Land

$ 119.1

$ 101.7

Buildings and improvements

772.2

648.1

Machinery and equipment

2,939.2

2,459.6

Construction in progress

348.1

296.4

Total property, plant and equipment

4,178.6

3,505.8

Less – accumulated depreciation

(1,800.5)

(1,486.5)

Property, plant and equipment, net

$ 2,378.1

^[1]

$ 2,019.3

[1]	Unaudited.

Long-Term Assets - Property, Plant and Equipment Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 99.2	$ 83.5	$ 279.1	$ 241.7
Restructuring charges			47.8
Asset impairment charges
Property, Plant and Equipment [Line Items]
Restructuring charges			$ 0.4	$ 3.5

Long-Term Assets - Investment in Affiliates (Details) - USD ($)
$ in Millions

Sep. 30, 2017

^[1]

Sep. 07, 2017

Dec. 31, 2016

Shanghai Lear Stec Automotive Parts Co Limited

$ 1,387.1

$ 1,121.3

Other assets and liabilities assumed, net

$ 16.2

42.7

Preliminary purchase price allocation

94.1

219.0

Shanghai Lear Stec Automotive Parts Co Limited | Customer relationships

Intangible assets

$ 66.0

[1]	Unaudited.

Long-Term Assets - Investment in Affiliates Additional Information (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 07, 2017

Sep. 30, 2017

Oct. 01, 2016

Sep. 30, 2017

Oct. 01, 2016

Dec. 31, 2016

Consolidation of affiliate, revaluation gain

$ 30.3

Redeemable noncontrolling interest

$ 147.7

^[1]

$ 147.7

^[1]

$ 0.0

Noncontrolling interest, change in redemption value

22.7

Annual sales

4,981.5

$ 4,526.4

$ 15,103.2

$ 13,914.1

Shanghai Lear Stec Automotive Parts Co Limited

Fair value of previously held equity interest

$ 94.0

Fair value of the noncontrolling interest

$ 125.0

Consolidation of affiliate, revaluation gain

$ 54.2

Noncontrolling interest, ownership percentage by noncontrolling owners

45.00%

Annual sales

$ 280.0

Shanghai Lear Stec Automotive Parts Co Limited | Customer relationships

Acquired intangible assets, weighted average useful life

12 years

Other Income And Expense [Member] | Shanghai Lear Stec Automotive Parts Co Limited

Consolidation of affiliate, revaluation gain

$ 54.2

[1]	Unaudited.

Goodwill (Detail)
$ in Millions

9 Months Ended

Sep. 30, 2017

USD ($)

Balance at January 1, 2017

$ 1,121.3

Foreign currency translation and other

49.1

Balance at September 30, 2017

1,387.1

^[1]

Antolin Seating

Shanghai Lear Stec Automotive Parts Co Limited

122.6

Operating segments | Seating

94.1

Balance at January 1, 2017

1,091.2

Foreign currency translation and other

48.9

Balance at September 30, 2017

1,262.7

Operating segments | Seating | Antolin Seating

Operating segments | Seating | Shanghai Lear Stec Automotive Parts Co Limited

122.6

Operating segments | E-Systems

0.0

Balance at January 1, 2017

30.1

Foreign currency translation and other

0.2

Balance at September 30, 2017

124.4

Operating segments | E-Systems | Antolin Seating

Operating segments | E-Systems | Shanghai Lear Stec Automotive Parts Co Limited

0.0

$ 94.1

[1]	Unaudited.

Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Millions

Sep. 30, 2017

Aug. 31, 2017

Dec. 31, 2016

$ 1,975.0

$ 1,943.7

Long-term debt and other

1,978.4

1,949.4

Long-term debt and other, net

(16.4)

(15.8)

1,962.0

1,933.6

Less — Current portion

(9.0)

^[1]

(35.6)

Long-term debt

$ 1,953.0

^[1]

$ 1,898.0

Credit agreement | Term Loan Facility | Credit Agreement — Term Loan Facility

2.70%

2.105%

$ 250.0

$ 468.7

(1.9)

(1.6)

Senior notes | 4.75% Senior Notes due 2023 (2023 Notes)

$ 248.1

$ 467.1

4.75%

$ 0.0

$ 500.0

0.0

(4.8)

Senior notes | 5.375% Senior Notes due 2024 (2024 Notes)

$ 0.0

$ 495.2

5.375%

$ 325.0

(2.5)

(2.8)

Senior notes | 5.25% Senior Notes due 2025 (2025 Notes)

$ 322.5

$ 322.2

5.25%

$ 650.0

(6.0)

(6.6)

Senior notes | 3.8% Senior Notes due 2027 (2027 Notes) (1)

$ 644.0

643.4

Long-term debt, net of unamortized discount before debt issuance costs

3.80%

$ 744.8

0.0

(6.0)

0.0

Weighted Average Interest Rate

$ 738.8

0.0

3.885%

Unamortized discount

$ 5.2

Other | Other

8.6

5.7

Increase (Decrease) in Stockholders' Equity [Roll Forward]

$ 0.0

[1]	Unaudited.

Debt - Additional Information (Detail) - USD ($)			3 Months Ended	9 Months Ended
Debt - Additional Information (Detail) - USD ($)	Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2017	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt				$ 744,700,000	$ 0
Loss on extinguishment of debt				21,200,000	0
Prior credit agreement payments				468,700,000	$ 15,600,000
Long-term debt, gross	$ 1,975,000,000		$ 1,975,000,000	$ 1,975,000,000		$ 1,943,700,000
Credit Agreement — Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Line of credit facility, facility fee				0.125%
Credit Agreement — Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Line of credit facility, facility fee				0.30%
Senior notes \| 3.8% Senior Notes due 2027 (2027 Notes) (1)
Debt Instrument [Line Items]
Debt instrument, face amount		$ 750,000,000
Debt instrument, interest rate, stated percentage	3.80%	3.80%	3.80%	3.80%
Debt redemption price, percentage		99.294%
Debt interest rate, effective percentage	3.885%	3.885%	3.885%	3.885%
Proceeds from issuance of long-term debt		$ 744,700,000
Debt issuance costs		6,000,000
Senior notes \| 3.8% Senior Notes due 2027 (2027 Notes) (1) \| Prior to June 15, 2027
Debt Instrument [Line Items]
Debt redemption price, percentage	100.00%
Senior notes \| 3.8% Senior Notes due 2027 (2027 Notes) (1) \| On or after June 15, 2027
Debt Instrument [Line Items]
Debt redemption price, percentage	100.00%
Senior notes \| 4.75% Senior Notes due 2023 (2023 Notes)
Debt Instrument [Line Items]
Debt instrument, face amount		$ 500,000,000
Debt instrument, interest rate, stated percentage	4.75%		4.75%	4.75%		4.75%
Debt redemption price, percentage		100.00%
Make-whole premium		$ 17,000,000
Loss on extinguishment of debt			$ 21,200,000	$ 21,200,000
Long-term debt, gross	$ 0		0	0		$ 500,000,000
Credit agreement \| Credit Agreement — Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt issuance costs		5,700,000
Line of credit facility, maximum borrowing capacity		1,750,000,000.00
Borrowings outstanding under revolving credit facility	$ 0		$ 0	$ 0		$ 0
Credit agreement \| Credit Agreement — Revolving Credit Facility \| Prior Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		1,250,000,000.00
Credit agreement \| Credit Agreement — Term Loan Facility \| Prior Term Loan Facility
Debt Instrument [Line Items]
Debt instrument, face amount		500,000,000.0
Credit agreement \| Credit Agreement — Term Loan Facility \| Term Loan Facility
Debt Instrument [Line Items]
Debt instrument, face amount		250,000,000.0
Debt instrument, interest rate, stated percentage	2.70%		2.70%	2.70%		2.105%
Prior credit agreement payments		$ 453,100,000
Long-term debt, gross	$ 250,000,000		$ 250,000,000	$ 250,000,000		$ 468,700,000

Debt - Interest Rates (Details)	9 Months Ended
Debt - Interest Rates (Details)	Sep. 30, 2017
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Eurocurrency Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end	1.30%
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Eurocurrency Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Eurocurrency Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.60%
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end	0.30%
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.00%
Revolving Credit Facility \| Credit Agreement — Revolving Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.60%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Eurocurrency Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end	1.50%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Eurocurrency Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.125%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Eurocurrency Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.90%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Base Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end	0.50%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.125%
Term Loan Facility \| Credit Agreement- Term Loan Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.90%

Debt - Schedule of Long Term Maturities (Details) $ in Millions	Sep. 30, 2017 USD ($)
Debt Disclosure [Abstract]
2017	$ 1.6
2018	6.3
2019	7.8
2020	14.0
2021	14.0
2022	$ 206.3

Pension and Other Postretirement Benefit Plans - Components of Net Periodic Benefit (Credit) Costs (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Pension \| U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1.3	$ 1.4	$ 3.8	$ 4.2
Interest cost	5.5	7.5	16.4	22.4
Expected return on plan assets	(7.3)	(9.5)	(21.7)	(28.6)
Amortization of actuarial (gain) loss	0.6	0.6	1.9	2.0
Settlement loss	0.0	0.0	0.2	0.2
Net periodic benefit (credit) cost	0.1	0.0	0.6	0.2
Pension \| Foreign
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1.8	1.6	5.3	4.8
Interest cost	4.0	3.8	11.2	11.9
Expected return on plan assets	(5.9)	(5.9)	(17.0)	(17.5)
Amortization of actuarial (gain) loss	1.3	0.8	3.8	2.3
Settlement loss	0.0	0.0	0.8	0.0
Net periodic benefit (credit) cost	1.2	0.3	4.1	1.5
Other postretirement \| U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.0	0.0	0.1	0.1
Interest cost	0.6	0.9	1.8	2.4
Amortization of actuarial (gain) loss	(0.7)	(0.3)	(2.0)	(0.9)
Amortization of prior service credit	0.0	0.0	0.0	0.0
Special termination benefits	0.0	0.0	0.0	0.0
Net periodic benefit (credit) cost	(0.1)	0.6	(0.1)	1.6
Other postretirement \| Foreign
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.1	0.1	0.4	0.4
Interest cost	0.4	0.4	1.2	1.2
Amortization of actuarial (gain) loss	0.1	0.1	0.2	0.2
Amortization of prior service credit	(0.1)	(0.1)	(0.3)	(0.3)
Special termination benefits	0.0	0.0	0.1	0.3
Net periodic benefit (credit) cost	$ 0.5	$ 0.5	$ 1.6	$ 1.8

Pension and Other Postretirement Benefit Plans - Additional Information (Detail) - Pension - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Defined Benefit Plan Disclosure [Line Items]
Employer's contribution towards defined benefit plan			$ 7.6
Minimum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer's contribution towards defined benefit plan in current year	$ 10.0		10.0
Maximum
Defined Benefit Plan Disclosure [Line Items]
Estimated employer's contribution towards defined benefit plan in current year	15.0		15.0
Foreign
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 0.0	$ 0.0	$ 0.8	$ 0.0

Other (Income) Expense, Net - Summary of Other (Income) Expense, Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Other Income and Expenses [Abstract]
Other expense	$ 34.4	$ 15.5	$ 47.2	$ 34.7
Other income	(56.2)	(1.3)	(59.5)	(35.5)
Other (income) expense, net	$ (21.8)	$ 14.2	$ (12.3)	$ (0.8)

Other (Income) Expense, Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Other Income and Expenses [Line Items]
Loss on extinguishment of debt			$ (21.2)	$ 0.0
Net foreign currency transaction gains (losses)	$ (5.3)	$ (3.6)	(3.9)	(5.4)
Consolidation of affiliate, revaluation gain				$ 30.3
Shanghai Lear Stec Automotive Parts Co Limited
Other Income and Expenses [Line Items]
Consolidation of affiliate, revaluation gain	54.2
4.75% Senior Notes due 2023 (2023 Notes) \| Senior notes
Other Income and Expenses [Line Items]
Loss on extinguishment of debt	$ (21.2)		$ (21.2)

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 77.8	$ 88.2	$ 240.2	$ 287.4
Pretax income before equity in net income of affiliates	$ 385.3	$ 310.3	$ 1,159.4	$ 1,030.2
Effective tax rate	20.20%	28.40%	20.70%	27.90%

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Oct. 01, 2016	Jan. 01, 2017
Income Tax Contingency [Line Items]
Tax benefits		$ (68.4)
Tax benefits, release of valuation allowances with respect to deferred tax assets of certain foreign subsidiaries		28.7
Tax benefits, share-based compensation		16.3
Redemption of the 2023 Notes		7.5
Tax benefits, restructuring charges and various other items		$ 15.9	$ 14.5
Consolidation of affiliate, revaluation gain			$ 30.3
U.S. federal statutory income tax rate		35.00%	35.00%
Excess foreign tax credit	$ 300.0	$ 300.0
Shanghai Lear Stec Automotive Parts Co Limited
Income Tax Contingency [Line Items]
Consolidation of affiliate, revaluation gain	$ 54.2
Accounting Standards Update 2016-09
Income Tax Contingency [Line Items]
Deferred tax asset recognized				$ 54.5

Net Income Per Share Attributable to Lear (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Earnings Per Share [Abstract]
Net income attributable to Lear	$ 295.2	$ 214.4	$ 912.9	$ 745.2
Less: Redeemable noncontrolling interest adjustment	(22.7)	0.0	(22.7)	0.0
Net income available to Lear common stockholders	$ 272.5	$ 214.4	$ 890.2	$ 745.2
Average common shares outstanding (in shares)	68,061,718	71,259,766	68,874,682	73,102,327
Dilutive effect of common stock equivalents (in shares)	772,561	792,504	662,126	706,893
Average diluted shares outstanding (in shares)	68,834,279	72,052,270	69,536,808	73,809,220
Basic net income per share available to Lear common stockholders (in dollars per share)	$ 4.00	$ 3.01	$ 12.92	$ 10.19
Diluted net income per share available to Lear common stockholders (in dollars per share)	$ 3.96	$ 2.98	$ 12.80	$ 10.10

Comprehensive Income and Equity - Summary of Comprehensive Income and Reconciliations of Equity (Detail) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2017

Oct. 01, 2016

Sep. 30, 2017

Oct. 01, 2016

Jul. 01, 2017

Dec. 31, 2016

Stock-based compensation transactions

$ 3,756.2

$ 3,156.1

$ 3,192.9

$ 3,017.7

14.9

15.6

8.4

6.7

Dividends declared to Lear Corporation stockholders

(77.9)

(152.7)

(332.2)

(557.7)

(34.8)

(21.9)

(105.8)

(67.5)

Dividends declared to noncontrolling interest holders

(0.7)

(0.4)

(33.2)

(13.2)

Adoption of ASU 2016-09 (Note 11, Taxes)

$ 0.0

$ 54.5

Redeemable non-controlling interest adjustment

(22.7)

Consolidation of affiliate

1.0

41.0

Non-controlling interests — other

0.0

Comprehensive income

Net income

315.0

235.0

960.5

792.0

Other comprehensive income (loss), net of tax

Defined benefit plan adjustments

(1.8)

1.5

(3.0)

(0.2)

Foreign currency translation adjustments

(10.8)

0.8

57.2

(10.6)

89.9

8.0

250.7

34.8

Other comprehensive income (loss)

77.3

10.3

304.9

24.0

Comprehensive income

392.3

245.3

1,265.4

816.0

Increase (Decrease) in Stockholders' Equity [Roll Forward]

4,027.3

^[1]

3,243.0

4,027.3

^[1]

3,243.0

Parent

Stock-based compensation transactions

3,621.9

3,012.8

3,057.2

2,927.4

14.9

15.6

8.4

6.7

Dividends declared to Lear Corporation stockholders

(77.9)

(152.7)

(332.2)

(557.7)

(34.8)

(21.9)

(105.8)

(67.5)

Dividends declared to noncontrolling interest holders

0.0

Adoption of ASU 2016-09 (Note 11, Taxes)

0.0

54.5

Redeemable non-controlling interest adjustment

(22.7)

Consolidation of affiliate

0.0

Non-controlling interests — other

0.0

(2.2)

Comprehensive income

Net income

295.2

214.4

912.9

745.2

Other comprehensive income (loss), net of tax

Defined benefit plan adjustments

(1.8)

1.5

(3.0)

(0.2)

Foreign currency translation adjustments

(10.8)

0.8

57.2

(10.6)

87.1

8.0

244.6

37.4

Other comprehensive income (loss)

74.5

10.3

298.8

26.6

Comprehensive income

369.7

224.7

1,211.7

771.8

Increase (Decrease) in Stockholders' Equity [Roll Forward]

3,871.1

3,078.5

3,871.1

3,078.5

Noncontrolling Interests

Stock-based compensation transactions

134.3

143.3

135.7

90.3

0.0

Dividends declared to Lear Corporation stockholders

0.0

0.0

Dividends declared to noncontrolling interest holders

(0.7)

(0.4)

(33.2)

(13.2)

Adoption of ASU 2016-09 (Note 11, Taxes)

$ 0.0

Redeemable non-controlling interest adjustment

0.0

Consolidation of affiliate

1.0

41.0

Non-controlling interests — other

0.0

2.2

Comprehensive income

Net income

19.8

20.6

47.6

46.8

Other comprehensive income (loss), net of tax

Defined benefit plan adjustments

0.0

Foreign currency translation adjustments

0.0

2.8

0.0

6.1

(2.6)

Other comprehensive income (loss)

2.8

0.0

6.1

(2.6)

Comprehensive income

22.6

20.6

53.7

44.2

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

$ 156.2

$ 164.5

$ 156.2

$ 164.5

[1]	Unaudited.

Comprehensive Income and Equity - Changes in AOCI, Net of Tax (Detail) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2017

Oct. 01, 2016

Sep. 30, 2017

Oct. 01, 2016

$ 3,756.2

$ 3,156.1

$ 3,192.9

$ 3,017.7

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

4,027.3

^[1]

3,243.0

4,027.3

^[1]

3,243.0

Defined benefit plans

Reclassification adjustments

(194.0)

(196.3)

(192.8)

(194.6)

0.9

0.8

3.4

2.5

Other comprehensive income (loss) recognized during the period

(2.7)

0.7

(6.4)

(2.7)

Reclassification adjustments, tax expense (benefit)

(195.8)

(194.8)

(195.8)

(194.8)

Comprehensive income (loss), tax

0.3

1.2

1.0

Other comprehensive income (loss), tax expense (benefit)

0.0

Derivative instruments and hedging

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

Reclassification adjustments

22.9

(50.1)

(45.1)

(38.7)

(3.1)

17.1

5.7

46.2

Other comprehensive income (loss) recognized during the period

(7.7)

(16.3)

51.5

(56.8)

Reclassification adjustments, tax expense (benefit)

12.1

(49.3)

12.1

(49.3)

Comprehensive income (loss), tax

(1.0)

6.0

1.9

16.7

Other comprehensive income (loss), tax expense (benefit)

(3.2)

(6.0)

16.6

(20.5)

Foreign currency translation

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

Other comprehensive income (loss) recognized during the period

(440.2)

(467.4)

(597.7)

(496.8)

87.1

8.0

244.6

37.4

Other comprehensive income (loss), tax expense (benefit)

(353.1)

(459.4)

(353.1)

(459.4)

Comprehensive income (loss), tax

$ 0.0

[1]	Unaudited.

Comprehensive Income and Equity - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended						9 Months Ended		81 Months Ended
	May 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Feb. 28, 2017
Equity, Class of Treasury Stock [Line Items]
Foreign currency translation gains (losses) related to intercompany transactions, long-term gain (loss)		$ (200,000)						$ 600,000	$ (500,000)
Increase in existing common stock share repurchase program											$ 658,800,000
Aggregate purchases authorized under common stock share repurchase program		4,100,000,000.0						4,100,000,000.0		$ 4,100,000,000.0	$ 1,000,000,000
Common stock repurchased								$ 332,200,000		$ 3,400,000,000
Common stock repurchased (in shares)								2,320,469
Common stock repurchased, average price per share (in dollars per share)								$ 143.14		$ 78.18
Common stock, share repurchase program, remaining authorized amount		$ 667,800,000						$ 667,800,000		$ 667,800,000
Treasury stock, retired (in shares)	8,000,000
Cash dividends declared per share (in dollars per share)		$ 0.50	$ 0.5	$ 0.5	$ 0.30	$ 0.30	$ 0.30	$ 1.50	$ 0.90
Dividends declared		$ 34,800,000			$ 21,900,000			$ 105,800,000	$ 67,500,000
Dividends paid								$ 104,400,000	$ 68,100,000
Common stock
Equity, Class of Treasury Stock [Line Items]
Treasury stock, retired	$ 100,000
Additional paid-in capital
Equity, Class of Treasury Stock [Line Items]
Treasury stock, retired	155,900,000
Retained earnings
Equity, Class of Treasury Stock [Line Items]
Treasury stock, retired	735,500,000
Treasury stock
Equity, Class of Treasury Stock [Line Items]
Treasury stock, retired	$ 891,500,000

Legal and Other Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Reserves for pending legal disputes, including commercial disputes and other matters	$ 8.7	$ 11.0
Environmental reserves	$ 9.0	$ 9.0

Legal and Other Contingencies - Summary of Product Liability and Warranty Claims (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2017 USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 49.1
Expense, net (including changes in estimates)	12.5
Settlements	(15.5)
Foreign currency translation and other	3.0
Ending balance	$ 49.1

Segment Reporting - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Oct. 01, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment	Oct. 01, 2016 USD ($)
Segment Reporting Information [Line Items]
Reportable operating segments \| Segment			2
Restructuring charges			$ 47.8
Operating segments \| Seating
Segment Reporting Information [Line Items]
Restructuring charges	$ 13.3	$ 7.8	29.6	$ 30.8
Operating segments \| E-Systems
Segment Reporting Information [Line Items]
Restructuring charges	2.7	6.9	6.3	17.5
Other
Segment Reporting Information [Line Items]
Restructuring charges	$ 1.0	$ 0.2	$ 12.7	$ 2.9

Segment Reporting - Summary of Segment Financial Information (Detail) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2017

Oct. 01, 2016

Sep. 30, 2017

Oct. 01, 2016

Dec. 31, 2016

$ 4,981.5

$ 4,526.4

$ 15,103.2

$ 13,914.1

385.2

345.1

1,211.0

1,091.4

111.7

98.7

313.2

283.4

156.2

118.6

430.2

300.3

Operating segments | Seating

11,712.0

^[1]

10,277.4

11,712.0

^[1]

10,277.4

$ 9,900.6

3,868.9

3,513.3

11,762.0

10,755.7

298.8

269.5

941.8

848.8

76.7

67.9

213.2

193.8

109.7

80.3

287.1

204.6

Operating segments | E-Systems

7,413.5

6,348.8

7,413.5

6,348.8

1,112.6

1,013.1

3,341.2

3,158.4

155.5

140.3

476.7

441.5

31.3

27.5

89.0

80.5

42.7

34.9

126.2

79.5

2,262.7

1,746.6

2,262.7

1,746.6

0.0

(69.1)

(64.7)

(207.5)

(198.9)

3.7

3.3

11.0

9.1

3.8

3.4

16.9

16.2