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Income Taxes Carryforwards (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Tax Credit Carryforward [Line Items] |  |  |  |
Valuation allowance | $ 1,421.9 | $ 909.9 | $ 774.7 | $ 683.0
Undistributed Earnings of Foreign Subsidiaries | 4,300.0 |  |  |
Net Operating Loss Carryforward |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Net operating loss | 1,800.0 |  |  |
Foreign Tax Credit Carryforward |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax Credit Carryforward, Amount | 1,300.0 |  |  |
Valuation allowance | 986.1 |  |  |
Foreign Tax Credit Carryforward | Tax Year 2026 Or Earlier |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax Credit Carryforward, Amount | 219.2 |  |  |
Foreign Tax Credit Carryforward | Tax Year 2029 Or Earlier |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax Credit Carryforward, Amount | 19.6 |  |  |
Foreign Tax Credit Carryforward | Tax Year 2030 Or Earlier |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax Credit Carryforward, Amount | 14.7 |  |  |
Foreign Tax Credit Carryforward | Tax Year 2033 or Earlier |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Tax Credit Carryforward, Amount | 14.8 |  |  |
Capital Loss Carryforward |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Net operating loss | $ 63.6 |  |  |
Foreign Tax Authority |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Maximum percentage of annual taxable income allowed to use of the tax credit carryforward | 30.00% |  |  |
Foreign Tax Authority | Net Operating Loss Carryforward |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Net operating loss | $ 1,300.0 |  |  |
Non-US |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
General Business Deferred Tax Assets | $ 4.4 |  |  |

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