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Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items] |  |  |
Proceeds | $ 67,754 | $ 54,612 | $ 40,809
Gross investment gains | 935 | 761 | 1,125
Gross investment (losses) | (2,704) | (656) | (674)
Realized gains (losses) on sales and disposals | (1,769) | 105 | 451
Net credit loss (provision) release (change in ACL recognized in earnings) | (103) | (15) | (91)
Impairment (losses) | (40) | (24) | (63)
Net credit loss (provision) release and impairment (losses) | (143) | (39) | (154)
Realized Investment Gains (Losses) | (880) | 711 | 634
Equity securities | (47) | (69) | 16
Equity Securities, FV-NI, Unrealized Gain (Loss) | (86) | 177 | (153)
Equity Securities, FV-NI, Gain (Loss) | (133) | 108 | (137)
Fixed Maturity Securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Realized Investment Gains (Losses) | $ (1,912) | $ 66 | $ 297

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- Definition Amount of increase (decrease) in allowance for credit loss of 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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