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Segment Reporting - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) | Jul. 01, 2017 USD ($) | Jun. 30, 2018 USD ($) reportable_operating_segment | Jul. 01, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Reportable operating segments | reportable_operating_segment |  |  | 2 |
Restructuring charges |  |  | $ 28.4 |
Operating segments | Seating |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | $ 5.9 | $ 9.6 | 20.3 | $ 16.3
Operating segments | E-Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | 3.6 | 1.9 | 5.5 | 3.6
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Restructuring charges | $ 0.5 | $ 11.6 | $ 2.6 | $ 11.7

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