Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,795	$ 1,667
Other comprehensive (loss) income, net of tax:
Change in net unrealized losses/gains on investments	(1,069)	(362)
Change in non-credit component of impairment losses on investments	(1)	1
Change in net unrealized gains/losses on cash flow hedges	3	4
Change in net periodic pension and postretirement costs	7	10
Foreign currency translation adjustments	(3)	0
Other comprehensive loss	(1,063)	(347)
Net loss (income) attributable to noncontrolling interests	10	(2)
Other comprehensive loss attributable to noncontrolling interests	5	2
Total shareholders’ comprehensive income	$ 747	$ 1,320