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Income Taxes - Textual (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Deferred tax assets, operating loss carryforwards, domestic | $ 2,000.0 |  |
Tax credit carryforward, amount | 808.2 |  |
Deferred tax assets, operating loss carryforwards, domestic, net | 406.1 |  |
Deferred tax assets, tax credit carryforwards, general business | 139.1 |  |
Deferred tax assets, operating loss carryforwards, foreign, net | 165.8 |  |
Deferred tax assets, operating loss carryforwards, state and local | 93.4 |  |
Deferred tax assets, operating loss carryforwards, foreign | 2.8 |  |
Deferred Tax Assets, Valuation Allowance | (1,469.2) | $ (1,420.9) |
Net unrecognized tax benefits | 9.2 | 9.2 |
Unrecognized tax benefits, gross interest and penalties (reversal) |  | 6.2 |
Unrecognized tax benefits, accrued gross interest and penalties | $ 0.0 | $ 0.0 | $ 6.1
Pillar Two effective tax rate | 15.00% |  |
Unrecognized Tax Benefits, Interest Tax Penalties And Interest Expense (Reversal) |  |  | $ 0.2
U.S. — federal |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance | $ (1,000.0) |  |
Australia |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance | $ (500.0) |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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