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Goodwill - Schedule of Goodwill Balances by Reporting Unit (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Apr. 03, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 1,225.8 | $ 1,260.1 |  |  | $ 1,297.1
Jefferson Wells |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 55.5 | 55.5 |  |  |
Americas | United States |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 490.2 | 490.3 |  | $ 490.3 |
Americas | United States | Jefferson Wells |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 545.7 | 545.8 |  |  |
Northern Europe | Germany |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill |  | 67.2 |  |  |
Northern Europe | Netherlands |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 119.3 | 109.5 |  |  |
Northern Europe | United Kingdom |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 100.2 | 97.3 |  |  |
Southern Europe |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill |  |  | $ 33.8 |  |
Southern Europe | France |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 73.3 | 67.3 |  | $ 68.9 |
Other Reporting Units |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 387.3 | $ 373.0 |  |  |

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