Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 6,352	$ 15,044
Gross investment gains	156	293
Gross investment (losses)	(312)	(856)
Realized gains (losses) on sales and disposals	(156)	(563)
Net credit loss (provision) release (change in ACL recognized in earnings)	71	(10)
Impairment (losses)	0	(7)
Net credit loss (provision) release and impairment (losses)	71	(17)
Net investment gains (losses)	(135)	(546)
Equity securities	(2)	7
Equity Securities, FV-NI, Unrealized Gain (Loss)	30	41
Equity Securities, FV-NI, Gain (Loss)	28	48
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Net investment gains (losses)	$ (85)	$ (580)

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