Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other Income and Expenses [Abstract]
Employee-related costs (1)	$ 904	$ 974
Third party staffing costs	383	312
General and administrative expenses	121	108
Pension, postretirement and postemployment benefit costs	25	25
Premium taxes, other taxes, and licenses & fees	153	167
Commissions and other variable expenses	1,331	1,530
Capitalization of DAC	(650)	(775)
Amortization of DAC and VOBA	537	590
Amortization of negative VOBA	(9)	(9)
Interest expense on debt	225	228
Total other expenses	3,020	3,150
Net change in cash surrender value of investments, net of premiums paid	$ 37	$ (16)