Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,856	$ 1,634	$ 3,860	$ 3,413
Other comprehensive (loss) income, net of tax:
Change in net unrealized losses/gains on investments	(119)	(922)	308	(1,991)
Change in non-credit component of impairment losses on investments	(1)	(1)	(3)	(2)
Change in net unrealized gains/losses on cash flow hedges	4	3	15	6
Change in net periodic pension and postretirement costs	3	9	5	16
Change in future policy benefits	(3)	8	(1)	17
Foreign currency translation adjustments	0	(5)	2	(8)
Other comprehensive (loss) income	(116)	(908)	326	(1,962)
Net (income) loss attributable to noncontrolling interests	(3)	3	(18)	13
Other comprehensive loss (income) attributable to noncontrolling interests	0	3	(2)	8
Total shareholders’ comprehensive income	$ 1,737	$ 732	$ 4,166	$ 1,472