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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Tax Credit Carryforward [Line Items] |  |  |  |
Income tax (expense) benefit |  | $ 26.8 | $ (27.6) | $ (28.2)
Effective tax rate (percent) |  | (5.60%) | 28.60% | 107.00%
Tax-effected operating loss carryforwards |  | $ 260.9 |  |
Capital loss carryforward |  | 47.4 | $ 106.5 |
Valuation allowance on deferred tax assets |  | 323.0 | 225.5 |
Unrecognized tax benefits that would impact effective tax rate |  | 17.1 |  |
Decrease in unrecognized tax benefits due to lapse of statute of limitations |  | 2.4 | $ 0.4 | $ 0.7
Forecast |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Decrease in unrecognized tax benefits due to lapse of statute of limitations | $ 3.8 |  |  |
United States |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Valuation allowance on deferred tax assets |  | 54.1 |  |
Luxembourg |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Valuation allowance on deferred tax assets |  | 223.8 |  |
State |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Valuation allowance on deferred tax assets |  | 21.5 |  |
Tax Year 2024 - 2026 |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Capital loss carryforward |  | 39.5 |  |
Indefinite |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Capital loss carryforward |  | 7.9 |  |
Tax Year 2028 - 2032 | Foreign and state jurisdiction |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Capital loss carryforward |  | 18.6 |  |
Tax Year 2023 - 2037 | Foreign and state jurisdiction |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Capital loss carryforward |  | $ 9.5 |  |

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