Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Universal Life Insurance
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	$ 167	$ 143
Capitalization	8	9
Amortization	(3)	(3)
Balance, end of period	172	149
ULSG
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	612	488
Capitalization	43	44
Amortization	(14)	(11)
Balance, end of period	641	521
Variable Annuities
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	66	73
Capitalization	0	0
Amortization	(2)	(2)
Balance, end of period	$ 64	$ 71