Consolidated Balance Sheet Parentheticals (Unaudited at September 30, 2026) - USD ($) shares in Millions, $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Fixed maturities, available for sale, amortized cost | $ 97,423 | $ 91,717 |
| Fixed maturities, available for sale, allowance for expected credit losses | 2 | 3 |
| Equity securities, cost | 414 | 457 |
| Restricted cash | 147 | 132 |
| Premiums receivable, allowance for expected credit losses | 69 | 58 |
| Reinsurance recoverables, allowance for estimated uncollectible reinsurance | 142 | 129 |
| Contractholder receivables, allowance for expected credit losses | $ 13 | $ 16 |
| Common stock, shares authorized (in shares) | 1,750.0 | 1,750.0 |
| Common stock, shares issued (in shares) | 204.9 | 217.5 |
| Common stock, shares outstanding (in shares) | 204.9 | 217.5 |
| Treasury stock, at cost (in shares) | 590.8 | 575.9 |
| X | ||||||||||
- Definition Amount of allowance for credit loss on contractholder receivables. No definition available.
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| X | ||||||||||
- Definition Amortized cost of 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
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of allowance for credit 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/2003/role/disclosureRef
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| X | ||||||||||
- Definition Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of allowance for credit loss on reinsurance recoverable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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