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Supplemental Guarantor Consolidating Financial Statements - Summary of Long-Term Debt of Lear and Guarantors on Combined Basis (Detail) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Condensed Financial Statements, Captions [Line Items] |  |
Long-Term Debt, Net | $ 1,954.8 | $ 1,694.5
Less — Current portion | (23.1) | (240.5)
Long-term debt | 1,931.7 | 1,454.0
Senior notes |  |
Condensed Financial Statements, Captions [Line Items] |  |
Long-Term Debt, Net | 1,947.2 | 1,694.5
Less — Current portion | (21.9) | (240.5)
Long-term debt | $ 1,925.3 | $ 1,454.0

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- Definition 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section H + Details
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