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Supplemental Guarantor Consolidating Financial Statements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 26, 2010 7.875% Senior Notes due 2018	Dec. 31, 2013 7.875% Senior Notes due 2018	Dec. 31, 2012 7.875% Senior Notes due 2018	Mar. 26, 2010 8.125% Senior Notes due 2020	Dec. 31, 2013 8.125% Senior Notes due 2020	Dec. 31, 2012 8.125% Senior Notes due 2020	Dec. 31, 2013 4.75% Senior Notes due 2023
Condensed Financial Statements, Captions [Line Items]
Long-term debt, aggregate principal amount					$ 280			$ 280		$ 500
Long-term debt, stated coupon rate					7.875%	7.875%		8.125%	8.125%	4.75%
Long-term debt, maturity date				Mar. 15, 2018	Mar. 15, 2018	Mar. 15, 2018	Mar. 15, 2020	Mar. 15, 2020	Mar. 15, 2020	Jan. 15, 2023
Selling, general and administrative expenses allocated from Lear	$ 111.5	$ 38.1	$ 28.7

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Amount of corporate and division operating costs allocated between the Parent and its subsidiaries.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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

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-Publisher SEC

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-Section 02

-Paragraph 22

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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