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Income Taxes - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) jurisdiction | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) jurisdiction | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2021 USD ($)
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Capital loss, foreign tax and other credit carryforwards | $ 1,128.1 | $ 1,136.0 | $ 1,128.1 | $ 1,136.0 |  |  |
Estimated net future reductions in tax associated with incentives granted |  |  | 5.7 | 5.4 | $ 5.7 |  |
Tax credit carryforward | $ 1,128.1 |  | $ 1,128.1 |  |  |  |
Number of significant foreign jurisdictions | jurisdiction | 11 |  | 11 |  |  |  |
Unrecognized tax benefits | $ 53.1 | 51.2 | $ 53.1 | 51.2 | 46.1 |  | $ 41.9
Unrecognized tax benefits that would impact effective tax rate | 41.5 | 37.1 | 41.5 | 37.1 |  |  |
Interest and penalties recognized |  |  | 2.3 | 4.3 | $ 2.6 |  |
Interest and penalties accrued | 18.6 | $ 16.3 | 18.6 | 16.3 |  |  |
Minimum |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Possible decrease in unrecognized tax benefits | 3.6 |  | 3.6 |  |  |  |
Maximum |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Possible decrease in unrecognized tax benefits | 23.9 |  | 23.9 |  |  |  |
U.S. State |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Operating loss carryforwards | 19.8 |  | 19.8 |  |  |  |
Foreign Tax Jurisdiction |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Operating loss carryforwards | 544.3 |  | 544.3 |  |  |  |
Switzerland |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Tax incentives granted, period (in years) |  | 10 years |  |  |  |  |
Capital loss, foreign tax and other credit carryforwards |  | $ 1,149.0 |  | 1,149.0 |  | $ 300.0 |
recorded valuation allowance |  | $ 318.0 |  | $ 318.0 |  |  |
Estimated net future reductions in tax associated with incentives granted | $ 120.0 |  | 831.0 |  |  |  |
Brazil |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Change in valuation allowance |  |  | $ 223.0 |  |  |  |

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