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Income Taxes Summary of Changes to Valuation Allowance on Deferred Tax Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Valuation Allowance [Line Items] |  |  |
Deferred tax assets, valuation allowance, beginning of period | $ 758 | $ 114 | $ 415
Changes to Related Gross Deferred Tax Assets | 112 | 320 | 23
Change/(Release) | 1 | 324 | (324)
Deferred tax assets, valuation allowance, end of period | 871 | 758 | 114
U.S. foreign tax credit carryforward |  |  |
Valuation Allowance [Line Items] |  |  |
Deferred tax assets, valuation allowance, beginning of period | 635 | 0 | 333
Changes to Related Gross Deferred Tax Assets | 101 | 308 | 0
Change/(Release) | 0 | 327 | (333)
Deferred tax assets, valuation allowance, end of period | 736 | 635 | 0
Net operating and capital losses |  |  |
Valuation Allowance [Line Items] |  |  |
Deferred tax assets, valuation allowance, beginning of period | 123 | 114 | 82
Changes to Related Gross Deferred Tax Assets | 11 | 12 | 23
Change/(Release) | 1 | (3) | 9
Deferred tax assets, valuation allowance, end of period | $ 135 | $ 123 | $ 114

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- Definition Valuation Allowance, Deferred Tax Asset, Adjustments Due To Changes In Gross Deferred Tax Assets + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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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. + References No definition available. + Details
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- Details
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