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Income Taxes - Income Tax Reconciliation (Parenthetical) (Details) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax [Line Items] |  |  |  |  |
French business tax, gross |  |  | $ 55.3 | $ 69.5 | $ 74.8
French business tax rate | 1.50% | 0.75% |  |  |
Repatriation of non-United States earnings |  |  | (2.0) | (17.8) | 2.5
Provision for income taxes |  |  | 123.9 | 219.8 | 198.0
Germany |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Provision for income taxes |  |  | 36.9 |  |
Netherlands |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Provision for income taxes |  |  | 8.1 |  |
French Business Tax |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Non-United States tax rate difference: |  |  | $ 43.7 | $ 54.9 | $ 59.1
United States |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
U.S. Federal statutory rate (as percent) |  |  | 21.00% | 21.00% | 21.00%
French business tax difference |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Non-United States tax rate difference: |  |  | $ (6.1) | $ (9.3) | $ (10.1)
Repatriation of non-United States earnings |  |  |  |  | (25.5)
French CICE |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |
Non-United States tax rate difference: |  |  |  |  | $ (39.9)

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