Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Universal Life Insurance
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	$ 356	$ 358
Capitalization	10	10
Amortization	(10)	(10)
Balance, end of period	356	358
ULSG
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	488	344
Capitalization	44	46
Amortization	(11)	(8)
Balance, end of period	521	382
Variable Annuities
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	74	80
Capitalization	0	0
Amortization	(1)	(1)
Balance, end of period	$ 73	$ 79