Income Taxes [Line Items]

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- Definition

Income Taxes Paid, Transferable Credits

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- Definition

Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Amount of interest expense accrued for an underpayment of income taxes.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Non-cash income tax benefit	$ (8.1)	$ (82.6)	$ 174.0
Valuation allowance	194.4	196.0
Gross unrecognized tax benefits	10.3	11.7	13.9	$ 13.4
Unrecognized tax benefits that would impact effective tax rate	8.9
Gross decreases related to settlements with taxing authorities	(0.8)	0.0	(0.2)
Payment of penalties	1.5	2.0
Interest on income taxes accrued	1.5	1.4
Tax credit carryforward, foreign	3.1
Deferred tax assets, operating loss carryforwards	762.3
Domestic operating loss carryforward deferred tax assets	378.8
Cash paid for income taxes, net	$ 283.3	120.2	$ 112.4
Switzerland \| Income Taxes Paid Benchmark \| Geographic Concentration Risk
Income Taxes [Line Items]
Concentration risk, percentage	5.00%
United States \| Income Taxes Paid Benchmark \| Geographic Concentration Risk
Income Taxes [Line Items]
Concentration risk, percentage	5.00%
Swiss Federal Tax Administration (FTA)
Income Taxes [Line Items]
Non-cash income tax benefit		55.4
Valuation allowance		5.1
Luxembourg Inland Revenue
Income Taxes [Line Items]
Non-cash income tax benefit		$ 93.2
Foreign Country
Income Taxes [Line Items]
Valuation allowance	$ 181.5
United States
Income Taxes [Line Items]
Cash paid for income taxes, net	194.6
Transferable tax credits	62.5
Switzerland
Income Taxes [Line Items]
Cash paid for income taxes, net	$ 16.5