Other Contract Holder Funds - Rollforward of Other Contract Holder Funds (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Payout Annuity
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	$ 837	$ 831
Deposits	202	213
Surrenders, withdrawals and benefits	(231)	(230)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	0	0
Interest credited	25	20
Policy charges and other	(27)	3
Balance as of ending of year	860	837
Variable Annuity
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	10,259	9,456
Deposits	995	1,350
Surrenders, withdrawals and benefits	(1,788)	(1,492)
Net transfers from (to) separate accounts	(1,256)	870
Investment performance / change in value of equity option	0	0
Interest credited	273	168
Policy charges and other	87	(93)
Balance as of ending of year	8,396	10,259
Fixed Annuity
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	11,696	13,185
Deposits	234	276
Surrenders, withdrawals and benefits	(2,406)	(2,017)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	0	0
Interest credited	342	389
Policy charges and other	130	(137)
Balance as of ending of year	9,736	11,696
Fixed Indexed Annuities
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	11,787	13,161
Deposits	211	126
Surrenders, withdrawals and benefits	(1,954)	(1,414)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	51	(302)
Interest credited	210	238
Policy charges and other	62	(22)
Balance as of ending of year	10,243	11,787
RILA
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	1,875	110
Deposits	2,890	1,811
Surrenders, withdrawals and benefits	(70)	(8)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	509	(37)
Interest credited	14	2
Policy charges and other	(1)	(3)
Balance as of ending of year	5,219	1,875
Closed Block Life
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	11,215	11,570
Deposits	307	320
Surrenders, withdrawals and benefits	(738)	(766)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	0	0
Interest credited	730	659
Policy charges and other	475	(568)
Balance as of ending of year	11,039	11,215
Closed Block Annuity
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	1,319	1,394
Deposits	4	9
Surrenders, withdrawals and benefits	(115)	(118)
Net transfers from (to) separate accounts	0	0
Investment performance / change in value of equity option	0	0
Interest credited	44	48
Policy charges and other	0	(14)
Balance as of ending of year	1,252	1,319
Total excluding institutional and other product lines
Policyholder Account Balance [Roll Forward]
Balance as of beginning of year	48,988	49,707
Deposits	4,843	4,105
Surrenders, withdrawals and benefits	(7,302)	(6,045)
Net transfers from (to) separate accounts	(1,256)	870
Investment performance / change in value of equity option	560	(339)
Interest credited	1,638	1,524
Policy charges and other	726	(834)
Balance as of ending of year	$ 46,745	$ 48,988