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Income Taxes - Textual (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Deferred tax assets, operating loss carryforwards, foreign | $ 19.1 |  |
Deferred tax assets, operating loss carryforwards, domestic | 1,700.0 |  |
Tax credit carryforward, amount | 745.6 |  |
Deferred tax assets, operating loss carryforwards, foreign, net | 138.7 |  |
Deferred tax assets, operating loss carryforwards, domestic, net | 366.8 |  |
Deferred tax assets, operating loss carryforwards, state and local | 80.3 |  |
Deferred tax assets, tax credit carryforwards, general business | 139.1 |  |
Valuation allowance, income tax | (1,473.5) | $ (1,451.0) |
Unrecognized tax benefits, period increase (decrease) | (0.8) |  |
Net unrecognized tax benefits | 8.7 | 9.5 |
Unrecognized tax benefits, gross interest and penalties (reversal) | 0.2 | 0.2 | $ 0.2
Unrecognized tax benefits, accrued gross interest and penalties | $ 6.1 | 5.9 | 5.7
Book income tax, minimum percent | 15.00% |  |
Global intangible low-taxed income | $ 0.0 | 197.2 | $ 67.0
Other noncurrent liabilities | $ 1.3 | $ 1.3 |
Pillar Two effective tax rate | 15.00% |  |
U.S. — federal |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Valuation allowance, income tax | $ (1,000.0) |  |
Non-U.S. |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Valuation allowance, income tax | $ (469.1) |  |

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