Segments and Geographic Information - Summary of Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Segment Reporting Information [Line Items] | ||||||
| Total assets | $ 3,496.8 | $ 9,371.0 | ||||
| Cash and cash equivalents | 113.6 | 613.5 | ||||
| Deferred income tax assets | 460.2 | 1,722.3 | ||||
| Operating Segments [Member] | Aurora [Member] | ||||||
| Segment Reporting Information [Line Items] | ||||||
| Total assets | [1] | 1,830.6 | 1,629.3 | |||
| Segment Reconciling Items [Member] | ||||||
| Segment Reporting Information [Line Items] | ||||||
| Cash and cash equivalents | 113.6 | 613.5 | ||||
| Deferred income tax assets | 460.2 | 1,722.3 | ||||
| Divested and other business assets | [2] | 115.3 | 85.3 | |||
| Assets held for sale | $ 977.1 | $ 5,320.6 | ||||
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of assets held-for-sale that are not part of a disposal group. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Divested business assets. No definition available.
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