Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Information Regarding DAC and VOBA) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, end of period, Total DAC and VOBA	$ 4,374	$ 4,487
Variable Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	2,217	2,414	$ 2,614
Capitalization	39	36	54
Amortization	(216)	(233)	(254)
Balance, end of period, DAC	2,040	2,217	2,414
Balance, beginning of period, VOBA	309	341	377
Amortization	(30)	(32)	(36)
Balance, end of period, VOBA	279	309	341
Balance, end of period, Total DAC and VOBA	2,319	2,526	2,755
Fixed Rate Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	110	107	88
Capitalization	8	14	31
Amortization	(3)	(11)	(12)
Balance, end of period, DAC	115	110	107
Balance, beginning of period, VOBA	59	65	70
Amortization	(4)	(6)	(5)
Balance, end of period, VOBA	55	59	65
Balance, end of period, Total DAC and VOBA	170	169	172
Index-linked Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	1,332	1,213	1,081
Capitalization	373	344	330
Amortization	(243)	(225)	(198)
Balance, end of period, DAC	1,462	1,332	1,213
Balance, beginning of period, VOBA	0	0	0
Amortization	0	0	0
Balance, end of period, VOBA	0	0	0
Balance, end of period, Total DAC and VOBA	1,462	1,332	1,213
Term and Whole Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	306	347	397
Capitalization	4	2	(1)
Amortization	(39)	(43)	(49)
Balance, end of period, DAC	271	306	347
Balance, beginning of period, VOBA	4	5	6
Amortization	(1)	(1)	(1)
Balance, end of period, VOBA	3	4	5
Balance, end of period, Total DAC and VOBA	274	310	352
Universal Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	119	115	114
Capitalization	13	13	10
Amortization	(10)	(9)	(9)
Balance, end of period, DAC	122	119	115
Balance, beginning of period, VOBA	31	35	39
Amortization	(4)	(4)	(4)
Balance, end of period, VOBA	27	31	35
Balance, end of period, Total DAC and VOBA	$ 149	$ 150	$ 150