Other Contract Holder Funds - Account Balances by Guaranteed Minimum Interest Rates (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Variable annuity
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 8,921	$ 10,259
Variable annuity | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 14	$ 6,788
Variable annuity | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
Variable annuity | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
Variable annuity | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 185	$ 200
Variable annuity | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
Variable annuity | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Variable annuity | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 8,722	$ 3,271
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Variable annuity | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 8,877	$ 10,150
Variable annuity | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	6,679
Variable annuity | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	185	200
Variable annuity | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	8,692	3,271
Variable annuity | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	13	32
Variable annuity | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	13	32
Variable annuity | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Variable annuity | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Variable annuity | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	2
Variable annuity | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	2
Variable annuity | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Variable annuity | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Variable annuity | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	30	75
Variable annuity | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	75
Variable annuity | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Variable annuity | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	30	0
Fixed Annuity
Policyholder Account Balance [Line Items]
Account values with crediting rates	1,214	1,219
Fixed Annuity | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 153	$ 190
Fixed Annuity | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
Fixed Annuity | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
Fixed Annuity | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 32	$ 38
Fixed Annuity | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
Fixed Annuity | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Fixed Annuity | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 1,029	$ 991
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Fixed Annuity | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 740	$ 630
Fixed Annuity | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	18	19
Fixed Annuity | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	30	35
Fixed Annuity | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	692	576
Fixed Annuity | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	113	142
Fixed Annuity | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	59	76
Fixed Annuity | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	2
Fixed Annuity | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	53	64
Fixed Annuity | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	76	447
Fixed Annuity | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	75	95
Fixed Annuity | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	1
Fixed Annuity | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	351
Fixed Annuity | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	285	0
Fixed Annuity | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	0
Fixed Annuity | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Annuity | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	284	0
Fixed Indexed Annuities
Policyholder Account Balance [Line Items]
Account values with crediting rates	142	92
Fixed Indexed Annuities | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 61	$ 68
Fixed Indexed Annuities | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
Fixed Indexed Annuities | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
Fixed Indexed Annuities | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0
Fixed Indexed Annuities | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
Fixed Indexed Annuities | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Fixed Indexed Annuities | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 81	$ 24
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Fixed Indexed Annuities | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 26	$ 30
Fixed Indexed Annuities | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	5	6
Fixed Indexed Annuities | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Indexed Annuities | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	21	24
Fixed Indexed Annuities | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	10	17
Fixed Indexed Annuities | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	10	17
Fixed Indexed Annuities | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Indexed Annuities | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Indexed Annuities | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	63	5
Fixed Indexed Annuities | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	3	5
Fixed Indexed Annuities | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Indexed Annuities | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	60	0
Fixed Indexed Annuities | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	43	40
Fixed Indexed Annuities | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	43	40
Fixed Indexed Annuities | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Fixed Indexed Annuities | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA
Policyholder Account Balance [Line Items]
Account values with crediting rates	48	17
RILA | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 12	$ 17
RILA | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
RILA | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
RILA | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0
RILA | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
RILA | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
RILA | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 36	$ 0
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
RILA | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 43	$ 10
RILA | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	7	10
RILA | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	36	0
RILA | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	4	7
RILA | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	4	7
RILA | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	0
RILA | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	0
RILA | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
RILA | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life
Policyholder Account Balance [Line Items]
Account values with crediting rates	6,936	7,067
Closed Block Life | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0
Closed Block Life | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
Closed Block Life | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
Closed Block Life | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0
Closed Block Life | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
Closed Block Life | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Closed Block Life | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 6,936	$ 7,067
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Closed Block Life | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 4,471	$ 4,566
Closed Block Life | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	4,471	4,566
Closed Block Life | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	1,842	1,868
Closed Block Life | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1,842	1,868
Closed Block Life | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	608	619
Closed Block Life | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	608	619
Closed Block Life | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	15	14
Closed Block Life | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Life | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	15	14
Closed Block Annuity
Policyholder Account Balance [Line Items]
Account values with crediting rates	1,113	1,171
Closed Block Annuity | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0
Closed Block Annuity | 0.00%-1.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	0.00%	0.00%
Closed Block Annuity | 0.00%-1.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.50%	1.50%
Closed Block Annuity | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 13	$ 11
Closed Block Annuity | 1.51%-2.50% | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	1.51%	1.51%
Closed Block Annuity | 1.51%-2.50% | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Closed Block Annuity | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 1,100	$ 1,160
Range of Guaranteed Minimum Crediting Rate	2.50%	2.50%
Closed Block Annuity | At Guaranteed Minimum
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 957	$ 980
Closed Block Annuity | At Guaranteed Minimum | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | At Guaranteed Minimum | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | At Guaranteed Minimum | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	957	980
Closed Block Annuity | 1 Basis Point-50 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	120	159
Closed Block Annuity | 1 Basis Point-50 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | 1 Basis Point-50 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | 1 Basis Point-50 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	120	159
Closed Block Annuity | 51 Basis Points-150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	24	22
Closed Block Annuity | 51 Basis Points-150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | 51 Basis Points-150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	1	1
Closed Block Annuity | 51 Basis Points-150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	23	21
Closed Block Annuity | Greater Than 150 Basis Points Above
Policyholder Account Balance [Line Items]
Account values with crediting rates	12	10
Closed Block Annuity | Greater Than 150 Basis Points Above | 0.00%-1.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	0	0
Closed Block Annuity | Greater Than 150 Basis Points Above | 1.51%-2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	12	10
Closed Block Annuity | Greater Than 150 Basis Points Above | Greater than 2.50%
Policyholder Account Balance [Line Items]
Account values with crediting rates	$ 0	$ 0