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Investments (Components of Net Investment Gains Losses - Asset Type) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Marketable Securities, Gain (Loss) [Abstract] |  |  |
Fixed maturity securities AFS | $ (1,912) | $ 66 | $ 297
Equity Securities, FV-NI, Gain (Loss) | (133) | 108 | (137)
Other net investment gains (losses): |  |  |
Mortgage loans | 21 | (18) | (213)
Real estate and real estate joint ventures (excluding changes in estimated fair value) | 653 | 502 | 7
Other limited partnership interests (excluding changes in estimated fair value) | 53 | (6) | (15)
Other gains (losses) | 178 | 131 | 198
Subtotal - investment portfolio gains (losses) | (1,140) | 783 | 137
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures | (14) | 45 | (4)
Non-investment portfolio gains (losses) | (108) | 701 | (243)
Subtotal | (122) | 746 | (247)
Net investment gains (losses) | $ (1,262) | $ 1,529 | $ (110)

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- Definition The net gain or loss incurred on assets and liabilities held by consolidated securitizations entities and all other gains and losses. + References No definition available. + Details
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- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117546-209714 + Details
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