Supplemental Guarantor Consolidating Financial Statements - Summary of Long-Term Debt of Lear and Guarantors on Combined Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Long-term debt and other, net	$ 1,933.6	$ 1,954.8
Less — Current portion	(35.6)	(23.1)
Long-term debt	1,898.0	1,931.7
Lear
Condensed Financial Statements, Captions [Line Items]
Long-term debt and other, net	1,927.9	1,947.2
Less — Current portion	(34.4)	(21.9)
Long-term debt	1,893.5	1,925.3
Lear \| Senior notes
Condensed Financial Statements, Captions [Line Items]
Long-term debt and other, net	1,460.8	1,458.8
Lear \| Term Loan Facility \| Credit Agreement — Term Loan Facility
Condensed Financial Statements, Captions [Line Items]
Long-term debt and other, net	$ 467.1	$ 488.4

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, 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

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, 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 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of long-term debt and capital lease obligations including current maturities.

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