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Debt - Additional Information (Detail)		1 Months Ended			3 Months Ended		6 Months Ended
	Jan. 05, 2015 USD ($)	Mar. 31, 2015	Jan. 31, 2015 USD ($)	Nov. 30, 2014 USD ($)	Jul. 02, 2016 USD ($)	Mar. 28, 2015 USD ($)	Jul. 02, 2016 USD ($)	Jun. 27, 2015 USD ($)	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Cash restricted for use - repurchase of senior notes							$ 0	$ 250,000,000
Gain (loss) on extinguishment of debt								(14,300,000)
Percentage owned, domestic subsidiaries							1
Gross borrowings					$ 1,962,800,000		$ 1,962,800,000		$ 1,973,200,000
Repayments under Term Loan Facility							9,400,000	$ 0
4.75% Senior Notes due 2023 | Senior notes
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount					$ 500,000,000		$ 500,000,000
Long-term debt, stated coupon rate					4.75%		4.75%		4.75%
Long-term debt, gross					$ 500,000,000		$ 500,000,000		$ 500,000,000
5.375% Senior Notes due 2024 | Senior notes
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount					$ 325,000,000		$ 325,000,000
Long-term debt, stated coupon rate					5.375%		5.375%		5.375%
Long-term debt, gross					$ 325,000,000		$ 325,000,000		$ 325,000,000
5.25% Senior Notes due 2025 | Eagle Ottawa
Debt Instrument [Line Items]
Restricted cash used to finance the acquisition	$ 350,000,000
5.25% Senior Notes due 2025 | Senior notes
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount					$ 650,000,000		$ 650,000,000
Long-term debt, stated coupon rate					5.25%		5.25%	8.125%	5.25%
Proceeds from offering				$ 650,000,000
Debt issuance costs				$ 8,400,000
Long-term debt, gross					$ 650,000,000		$ 650,000,000		$ 650,000,000
8.125% Senior Notes due 2020 | Senior notes
Debt Instrument [Line Items]
Cash restricted for use - repurchase of senior notes						$ 250,000,000
Percentage of debt redemption		104.063%
8.125% Senior Notes due 2020 | Senior notes | Unsecured Debt
Debt Instrument [Line Items]
Repayments of debt						255,000,000
Gain (loss) on extinguishment of debt						$ (14,300,000)
Credit Agreement — Term Loan Facility | Term Loan Facility
Debt Instrument [Line Items]
Credit agreement borrowings			$ 500,000,000
Line of credit facility, maximum borrowing capacity					500,000,000		500,000,000
Long-term debt, gross					481,200,000		481,200,000		490,600,000
Repayments under Term Loan Facility					$ 6,300,000		$ 9,400,000
Credit Agreement — Term Loan Facility | Term Loan Facility | Eurocurrency Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end					1.375%		1.375%
Credit Agreement — Term Loan Facility | Term Loan Facility | Eurocurrency Rate | Minimum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					1.25%		1.25%
Credit Agreement — Term Loan Facility | Term Loan Facility | Eurocurrency Rate | Maximum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					2.25%		2.25%
Credit Agreement — Term Loan Facility | Term Loan Facility | Adjusted Base Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end					0.375%		0.375%
Credit Agreement — Term Loan Facility | Term Loan Facility | Adjusted Base Rate | Minimum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					0.25%		0.25%
Credit Agreement — Term Loan Facility | Term Loan Facility | Adjusted Base Rate | Maximum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					1.25%		1.25%
Credit agreement- revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 1,250,000,000.00		$ 1,250,000,000.00
Credit agreement- revolving credit facility | Minimum
Debt Instrument [Line Items]
Line of credit facility, facility fee							0.25%
Credit agreement- revolving credit facility | Maximum
Debt Instrument [Line Items]
Line of credit facility, facility fee							0.50%
Credit agreement- revolving credit facility | Eurocurrency Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end					1.25%		1.25%
Credit agreement- revolving credit facility | Eurocurrency Rate | Minimum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					1.00%		1.00%
Credit agreement- revolving credit facility | Eurocurrency Rate | Maximum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					2.25%		2.25%
Credit agreement- revolving credit facility | Adjusted Base Rate
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end					0.25%		0.25%
Credit agreement- revolving credit facility | Adjusted Base Rate | Minimum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					0.00%		0.00%
Credit agreement- revolving credit facility | Adjusted Base Rate | Maximum
Debt Instrument [Line Items]
Long-term debt, stated coupon rate					1.25%		1.25%
Credit agreement- revolving credit facility | Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings outstanding under revolving credit facility					$ 0		$ 0		$ 0

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt and capital lease obligations. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Percentage ownership by Lear of domestic subsidiaries who are guarantors

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Restricted Cash Disbursements for Repayments of Senior Debt

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Restricted Cash Disbursements to Acquire Businesses, Gross

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage of principal amount of debt redeemed.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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