INVESTMENTS - Schedule of Changes in Net Unrealized Appreciation (Depreciation) for Investments (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Increase (decrease) during the period between the fair value and cost of investments carried at fair value, and deferred taxes thereon: | ||||
| Fixed maturity securities - available for sale, held to maturity and short-term investments | $ (11) | $ 111 | $ (247) | $ 310 |
| Change in URA(D), pre-tax | (11) | 111 | (247) | 310 |
| Deferred tax benefit (expense) | 2 | (23) | 51 | (65) |
| Change in URA(D), net of deferred taxes, included in stockholders' equity | $ (9) | $ 88 | $ (197) | $ 245 |
| X | ||||||||||
- References No definition available.
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- Definition Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after adjustment, of tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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