Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 40,625	$ 67,754	$ 54,612
Gross investment gains	563	935	761
Gross investment (losses)	(1,732)	(2,704)	(656)
Realized gains (losses) on sales and disposals	(1,169)	(1,769)	105
Net credit loss (provision) release (change in ACL recognized in earnings)	(2)	(103)	(15)
Impairment (losses)	(1,300)	(40)	(24)
Net credit loss (provision) release and impairment (losses)	(1,302)	(143)	(39)
Realized Investment Gains (Losses)	(1,028)	(880)	711
Equity securities	21	(47)	(69)
Equity Securities, FV-NI, Unrealized Gain (Loss)	60	(86)	177
Equity Securities, FV-NI, Gain (Loss)	81	(133)	108
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Realized Investment Gains (Losses)	$ (2,471)	$ (1,912)	$ 66

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