Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Information Regarding DAC and VOBA) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, end of period, Total DAC and VOBA	$ 4,348
Variable Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	2,040	$ 2,217
Capitalization	10	9
Amortization	(52)	(55)
Balance, end of period, DAC	1,998	2,171
Balance, beginning of period, VOBA	279	309
Amortization	(7)	(8)
Balance, end of period, VOBA	272	301
Balance, end of period, Total DAC and VOBA	2,270	2,472
Fixed Rate Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	115	110
Capitalization	1	4
Amortization	0	(2)
Balance, end of period, DAC	116	112
Balance, beginning of period, VOBA	55	59
Amortization	(1)	(1)
Balance, end of period, VOBA	54	58
Balance, end of period, Total DAC and VOBA	170	170
Index-linked Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	1,462	1,332
Capitalization	94	90
Amortization	(64)	(59)
Balance, end of period, DAC	1,492	1,363
Balance, beginning of period, VOBA	0	0
Amortization	0	0
Balance, end of period, VOBA	0	0
Balance, end of period, Total DAC and VOBA	1,492	1,363
Term and Whole Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	271	306
Capitalization	0	1
Amortization	(9)	(10)
Balance, end of period, DAC	262	297
Balance, beginning of period, VOBA	3	4
Amortization	0	0
Balance, end of period, VOBA	3	4
Balance, end of period, Total DAC and VOBA	265	301
Universal Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Balance, beginning of period, DAC	122	119
Capitalization	5	3
Amortization	(2)	(2)
Balance, end of period, DAC	125	120
Balance, beginning of period, VOBA	27	31
Amortization	(1)	(1)
Balance, end of period, VOBA	26	30
Balance, end of period, Total DAC and VOBA	$ 151	$ 150