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Other Operating Expense - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020
Other Operating Expense [Line Items] |  |  |  |  |  |
Restructuring charge | $ 0.8 | $ 15.8 | $ 18.3 |  |  |
Anticipated future cash payments | 10.3 |  | 10.3 |  | $ 12.5 | $ 14.2
Other operating expense | $ 0.8 | 15.8 | $ 16.0 | $ 43.6 |  |
Asset impairment |  | $ 9.4 |  |  |  |
Terminated Merger | Woodward, Inc |  |  |  |  |  |
Other Operating Expense [Line Items] |  |  |  |  |  |
Other operating expense |  |  |  | $ (43.6) |  |

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