Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Income and Expenses [Abstract]
Employee related costs (1)	$ 3,520	$ 3,515	$ 3,514
Third party staffing costs	1,573	1,423	1,335
General and administrative expenses	700	686	761
Pension, postretirement and postemployment benefit costs	98	147	165
Premium taxes, other taxes, and licenses & fees	608	629	764
Commissions and other variable expenses	5,265	5,463	5,596
Capitalization of DAC	(2,558)	(2,718)	(3,013)
Amortization of DAC and VOBA	1,931	2,555	3,160
Amortization of negative VOBA	(41)	(34)	(45)
Interest expense on debt	938	920	913
Total other expenses	12,034	12,586	13,150
Net change in cash surrender value of investments, net of premiums paid	$ 93	$ (144)	$ (147)