Income Taxes - Schedule of Reconciliation of U.S. Federal Statutory Income Tax Rate to Effective Income Tax Rate Prior to Adoption of ASU 2023-09 (Detail) - USD ($) $ in Millions |
12 Months Ended | |||||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Income Tax Disclosure [Abstract] | ||||||
| Tax expense at United States statutory rate | $ 57.8 | $ 35.6 | $ 42.6 | |||
| Increase (decrease) in tax resulting from: | ||||||
| Differences between U.S. and foreign tax rates on foreign income, including withholding taxes | 30.2 | 90.3 | ||||
| U.S. tax expense (benefit) on foreign income, net of foreign tax credits | (12.0) | 1.1 | ||||
| Intra-entity transfers of intellectual property | (177.6) | 0.0 | ||||
| Deferred tax charge | 18.5 | (7.4) | ||||
| Increase (decrease) in valuation allowances | (15.1) | 28.8 | (61.0) | |||
| State taxes, net of federal benefit | (0.8) | [1] | (2.2) | (5.6) | ||
| Unrecognized tax (benefits) expenses | (5.8) | (13.8) | (6.1) | |||
| Excess tax expense (benefits) on equity awards | 15.5 | 6.5 | 5.2 | |||
| U.S. research and development tax credit | (4.2) | (4.9) | (4.4) | |||
| Expenses not deductible for tax | 6.3 | 3.2 | ||||
| Other | (0.8) | (0.3) | 2.9 | |||
| Total | $ 47.3 | $ (84.9) | $ 60.8 | |||
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- Definition Expenses not deductible for tax. No definition available.
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- Definition Income tax reconciliation deferred tax charge. No definition available.
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| X | ||||||||||
- Definition Income tax reconciliation domestic tax expense (benefit) on foreign income, net of foreign tax credits. No definition available.
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| X | ||||||||||
- Definition Income tax reconciliation intra entity asset transfers. No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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