Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Income and Expenses [Abstract]
Employee related costs (1)	$ 3,515	$ 3,514	$ 3,665
Third party staffing costs	1,423	1,335	1,755
General and administrative expenses	686	761	901
Pension, postretirement and postemployment benefit costs	147	165	233
Premium taxes, other taxes, and licenses & fees	629	764	674
Commissions and other variable expenses	5,463	5,596	6,001
Capitalization of DAC	(2,718)	(3,013)	(3,358)
Amortization of DAC and VOBA	2,555	3,160	2,896
Amortization of negative VOBA	(34)	(45)	(33)
Interest expense on debt	920	913	955
Total other expenses	12,586	13,150	13,689
Net change in cash surrender value of investments, net of premiums paid	$ (144)	$ (147)	$ (219)