v3.25.4

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 |  |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit 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, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-22 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A + Details
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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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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