Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Income and Expenses [Abstract]
Employee-related costs (1)	$ 933	$ 904
Third party staffing costs	344	383
General and administrative expenses	143	116
Pension, postretirement and postemployment benefit costs	59	25
Premium taxes, other taxes, and licenses & fees	161	153
Commissions and other variable expenses	1,417	1,331
Capitalization of DAC	(718)	(652)
Amortization of DAC and VOBA	470	475
Amortization of negative VOBA	(7)	(8)
Interest expense on debt	255	225
Total other expenses	3,057	2,952
Net change in cash surrender value of investments, net of premiums paid	$ (38)	$ 37