DAC, VOBA, DSI, and DFEL (DFEL) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2012
Changes in DFEL [Abstract]
Balance as of beginning-of-year			$ 5,045
Amortization	$ 74	$ 63	213	$ 192
Balance as of end-of-year	5,646		5,646
UL and Other [Member]
Changes in DFEL [Abstract]
Balance as of beginning-of-year			4,735	3,902
Deferrals			799		$ 1,060
Amortization			(191)		(227)
Balance as of end-of-year	5,343		5,343		4,735
Variable Annuities [Member]
Changes in DFEL [Abstract]
Balance as of beginning-of-year			310	$ 318
Deferrals			15		22
Amortization			(22)		(30)
Balance as of end-of-year	$ 303		$ 303		$ 310