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Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Proceeds | $ 20,710 | $ 10,923 | $ 34,734 | $ 26,563
Gross investment gains | 231 | 145 | 340 | 363
Gross investment (losses) | (1,001) | (132) | (1,404) | (391)
Realized gains (losses) on sales and disposals | (770) | 13 | (1,064) | (28)
Net credit loss (provision) release (change in ACL recognized in earnings) | 94 | 5 | (170) | (21)
Impairment (loss) | 5 | (13) | (35) | (13)
Net credit loss (provision) release and impairment (loss) | 99 | (8) | (205) | (34)
Net investment gains (losses) | (445) | 434 | (656) | 437
Equity securities | 0 | (2) | (30) | (34)
Equity Securities, FV-NI, Unrealized Gain (Loss) | (42) | 57 | (62) | 164
Equity Securities, FV-NI, Gain (Loss) | (42) | 55 | (92) | 130
Fixed Maturity Securities |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Net investment gains (losses) | $ (671) | $ 5 | $ (1,269) | $ (62)

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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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