Deferred Policy Acquisition Costs, Value of Business Acquired and Other Intangibles (Unearned Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Universal Life Insurance
Deferred Revenue Arrangement [Line Items]
Balance, beginning of year	$ 143	$ 118	$ 80
Capitalization	35	35	46
Amortization	(11)	(10)	(8)
Balance, end of year	167	143	118
ULSG
Deferred Revenue Arrangement [Line Items]
Balance, beginning of year	488	344	184
Capitalization	174	181	185
Amortization	(50)	(37)	(25)
Balance, end of year	612	488	344
Variable Annuities
Deferred Revenue Arrangement [Line Items]
Balance, beginning of year	73	79	84
Capitalization	0	2	2
Amortization	(7)	(8)	(7)
Balance, end of year	$ 66	$ 73	$ 79