Income Taxes - Schedule of Components of the Net Deferred Tax Asset (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Deferred tax assets: | ||
| Losses and tax credit carryforwards | $ 4,155 | $ 4,636 |
| Basis differences on investments | 336 | 30 |
| Accruals not currently deductible, and other | 276 | 150 |
| Investments in foreign subsidiaries | 29 | 19 |
| Loss reserve discount | 440 | 443 |
| Loan loss and other reserves | 43 | 37 |
| Unearned premium reserve reduction | 0 | 46 |
| Fixed assets and intangible assets | 271 | 293 |
| Unrealized losses related to available for sale debt securities | 153 | 618 |
| Employee benefits | 163 | 192 |
| Other | 10 | 39 |
| Total deferred tax assets | 5,876 | 6,503 |
| Deferred tax liabilities: | ||
| Deferred policy acquisition costs | (139) | (278) |
| Life policy reserves | (43) | (45) |
| Unearned premium reserve reduction | (161) | 0 |
| Deferred tax liabilities | (343) | (323) |
| Net deferred tax assets before valuation allowance | 5,533 | 6,180 |
| Valuation allowance | (1,051) | (1,650) |
| Net deferred tax assets | $ 4,482 | $ 4,530 |
| X | ||||||||||
- Definition Deferred Tax Assets Accruals Not Currently Deductible and Other No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Assets, Net before Valuation Allowance No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Assets Operating Loss and Tax Credit Carryforwards No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Assets Property Plant And Equipment And Other Finite Lived Assets No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Assets, Tax Deferred Expense Reserves and Accruals Provision for Loan Losses and Other Reserves No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Liabilities, Deferred Expense, Reserves and Accruals, Policyholder Liabilities No definition available.
|
| X | ||||||||||
- Definition Deferred Tax Liabilities, Reserves And Accruals, Unearned Premiums Reserves No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the entity's investment in its wholly-owned subsidiaries. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loss reserves other than estimated credit losses. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the unearned premiums reserve. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|