Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Universal Life Insurance
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	$ 190	$ 167
Capitalization	28	25
Amortization	(9)	(9)
Balance, end of period	209	183
ULSG
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	715	612
Capitalization	117	126
Amortization	(56)	(46)
Balance, end of period	776	692
Variable Annuities
Deferred Revenue Arrangement [Line Items]
Balance, beginning of period	59	66
Capitalization	0	0
Amortization	(5)	(5)
Balance, end of period	$ 54	$ 61