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Basis of Presentation and Significant Accounting Policies - Additional Information (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
May 29, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) segment component | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Noncash or Part Noncash Divestitures [Line Items] |  |  |  |  |  |
Number of reportable segments | segment |  |  |  | 3 |  |
Number of components supplied to worldwide (more than) | component |  |  |  | 1,300 |  |
Effective tax rate |  | 20.30% | 20.60% | 22.30% | 22.10% |
Benefits recognized for excess tax benefits related to employee share-based payments |  |  |  | $ 0.9 | $ 2.0 |
Unrecognized tax benefits that would impact effective tax rate |  | $ 4.5 |  | 4.5 |  |
Restricted cash and cash equivalents |  | 6.0 |  | 6.0 |  |
Total inventories |  | 13.0 |  | 13.0 |  | $ 17.1
Net gains on foreign exchange forward contracts |  |  |  | 0.1 |  |
Recognized gain on FX forward contracts not designated as hedges |  | 0.7 | $ 0.2 | (0.9) | $ (1.3) |
Notional amount of foreign currency forward contracts |  | 239.7 |  | 239.7 |  |
Canada: | COVID-19 |  |  |  |  |  |
Noncash or Part Noncash Divestitures [Line Items] |  |  |  |  |  |
Government Subsidies Recognized To Offset Expenses, COVID-19 |  | $ 16.6 |  | $ 16.6 |  |
Nuclear Services Business |  |  |  |  |  |
Noncash or Part Noncash Divestitures [Line Items] |  |  |  |  |  |
Net assets exchanged in non-cash transaction | $ 18.0 |  |  |  |  |

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