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Acquisitions - Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) | Dec. 31, 2017 USD ($) Business | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |
Business acquisition, cash paid |  | $ 64.1 |
Goodwill |  |  | $ 189.8
Number of businesses acquired | Business |  | 2 |
Contingent consideration liability |  | $ 2.9 |
Engineered Products |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  |  | 115.4
ARC |  |  |
Business Acquisition [Line Items] |  |  |
Business acquisition, cash paid | $ 163.2 |  |
ARC | Engineered Products |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  |  | 82.1
Recognized intangible assets and liabilities |  |  | $ 63.0
OPM |  |  |
Business Acquisition [Line Items] |  |  |
Business combination returned shares value |  | 20.0 |
Structil SA and Aerospace and OPM |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | 38.0 |
Recognized intangible assets and liabilities |  | $ 32.0 |

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