Other Expenses (Other Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other Income and Expenses [Abstract]
Employee-related costs (1)	$ 896	$ 868	$ 1,829	$ 1,772
Third-party staffing costs	360	375	704	758
General and administrative expenses	187	164	330	280
Pension, postretirement and postemployment benefit costs	59	24	118	49
Premium taxes, other taxes, and licenses & fees	184	137	345	290
Commissions and other variable expenses	1,447	1,300	2,864	2,631
Capitalization of DAC	(729)	(637)	(1,447)	(1,289)
Amortization of DAC and VOBA	479	458	949	933
Amortization of negative VOBA	(6)	(7)	(13)	(15)
Interest expense on debt	256	226	511	451
Total other expenses	3,133	2,908	6,190	5,860
Net change in cash surrender value of investments, net of premiums paid	$ (34)	$ 78	$ (72)	$ 115