Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Income and Expenses [Abstract]
Employee-related costs (1)	$ 950	$ 933
Third-party staffing costs	349	344
General and administrative expenses	148	143
Pension, postretirement and postemployment benefit costs	65	59
Premium taxes, other taxes, and licenses & fees	176	161
Commissions and other variable expenses	1,503	1,417
Capitalization of DAC	(740)	(718)
Amortization of DAC and VOBA	508	470
Amortization of negative VOBA	(6)	(7)
Interest expense on debt	264	255
Total other expenses	3,217	3,057
Net change in cash surrender value of investments, net of premiums paid	$ (50)	$ (38)