Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Other Income and Expenses [Abstract]
Employee-related costs (1)	$ 914	$ 880	$ 2,743	$ 2,652
Third-party staffing costs	362	353	1,066	1,111
General and administrative expenses	209	178	539	458
Pension, postretirement and postemployment benefit costs	59	24	177	73
Premium taxes, other taxes, and licenses & fees	162	172	507	462
Commissions and other variable expenses	1,483	1,268	4,347	3,899
Capitalization of DAC	(742)	(626)	(2,189)	(1,915)
Amortization of DAC and VOBA	499	441	1,448	1,374
Amortization of negative VOBA	(7)	(7)	(20)	(22)
Interest expense on debt	265	239	776	690
Total other expenses	3,204	2,922	9,394	8,782
Net change in cash surrender value of investments, net of premiums paid	$ 12	$ 30	$ (60)	$ 145