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Pensions - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |
Multiemployer plans, withdrawal charges | $ 2.5 |  | $ 2.5
Withdrawal liability from IAM National Pension Fund |  | $ 0.3 |
U.S. Benefit Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employer contributions |  | 1.9 |
Non-U.S. Benefit Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employer contributions |  | 0.7 | $ 0.6
Estimated employer contributions remaining in current year |  | $ 0.5 |

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