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Investments (Components of Net Investment Gains Losses - Asset Type) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Marketable Securities, Gain (Loss) [Abstract] |  |  |
Fixed maturity securities AFS (1) | $ (731) | $ (2,471) | $ (1,912)
Equity Securities, FV-NI, Gain (Loss) | (18) | 81 | (133)
Other net investment gains (losses): |  |  |
Mortgage loans | (289) | (270) | 21
Real estate and REJV (excluding changes in estimated fair value) | 245 | 69 | 653
OLPI (excluding changes in estimated fair value) (2) | (55) | 12 | 53
Other gains (losses) | (3) | (158) | 178
Subtotal - investment portfolio gains (losses) | (851) | (2,737) | (1,140)
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures | 4 | (6) | (14)
Non-investment portfolio gains (losses) | (337) | (81) | (106)
Subtotal | (333) | (87) | (120)
Net investment gains (losses) | $ (1,184) | $ (2,824) | $ (1,260)

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- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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