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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) reportable_operating_segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jan. 01, 2019 USD ($)
Accounting Policies [Abstract] |  |  |  |
Allowance for doubtful accounts | $ 36.0 | $ 33.2 |  |
Capitalized pre-production E&D costs | 211.2 | 230.6 |  |
Capitalized pre-production tooling costs related to customer-owned tools | 231.6 | 198.1 |  |
Cash collected related to E&D and tooling costs | 408.3 | 487.5 |  |
Depreciation expense | 447.6 | 433.0 | $ 380.1 |
Capital expenditures recorded in accounts payable | 131.6 | 156.2 | 119.7 |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 194.2 | 88.0 | 70.9 |
Fixed asset impairment charges |  | 1.4 | 2.1 |
Other long-term assets | 527.0 |  |  |
Lease obligations under operating leases | $ 536.3 |  |  |
Percentage of net sales | 1.00% |  |  |
Contract liabilities | $ 0.0 |  |  |
Contract liabilities recognized in revenue | 0.0 |  |  |
Engineering and development costs | 151.2 | 153.5 | 147.9 |
Foreign currency transaction losses | $ 20.6 | 14.4 | 5.1 |
Number of reportable operating segments | reportable_operating_segment | 2 |  |  |
Asset impairments |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 9.5 | $ 4.7 | $ 1.3 |
ASU 2016-02 |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other long-term assets |  |  |  | $ 438.1
Lease obligations under operating leases |  |  |  | $ 445.8

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