DAC, VOBA, DSI, and DFEL (DAC) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Traditional Life [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	$ 1,333	$ 1,195
Deferrals	104	266
Amortization	(72)	(128)
Balance as of end-of-year	1,365	1,333
UL and Other [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	5,605	5,360
Deferrals	239	539
Amortization	(147)	(294)
Balance as of end-of-year	5,697	5,605
Retirement Plan Services [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	236	235
Deferrals	10	20
Amortization	(9)	(19)
Balance as of end-of-year	237	236
Group Protection [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	141	140
Deferrals	53	98
Amortization	(49)	(97)
Balance as of end-of-year	145	141
Variable Annuities [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	3,751	3,717
Deferrals	176	391
Amortization	(181)	(357)
Balance as of end-of-year	3,746	3,751
Fixed Annuities [Member]
Changes in DAC [Roll Forward]
Balance as of beginning-of-year	439	448
Deferrals	23	60
Amortization	(34)	(69)
Balance as of end-of-year	$ 428	$ 439