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Segment Reporting - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 26, 2015 USD ($) | Sep. 27, 2014 USD ($) | Sep. 26, 2015 USD ($) Segment | Sep. 27, 2014 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Reportable operating segments | Segment |  |  | 2 |
Restructuring charges |  |  | $ 64.0 |
Operating segments | Seating |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | $ 4.3 | $ 17.0 | 47.3 | $ 68.8
Operating segments | Electrical |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | 3.7 | 2.5 | 9.7 | 7.3
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | $ 6.9 | $ 1.5 | $ 14.7 | $ 10.5

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