Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Universal Life Insurance
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	$ 143	$ 118
Capitalization	27	26
Amortization	(8)	(7)
Balance, end of period	162	137
ULSG
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	488	344
Capitalization	131	137
Amortization	(36)	(26)
Balance, end of period	583	455
Variable Annuities
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	73	79
Capitalization	0	1
Amortization	(6)	(6)
Balance, end of period	$ 67	$ 74