Schedule II-Condensed Financial Information of Registrant (Statement of Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shareholders’ net income	$ 6,025	$ 6,104	$ 4,572
Other comprehensive (loss) income, net of tax:
Change in net unrealized gains/losses on investments	(2,260)	(457)	428
Change in net unrealized gains/losses on cash flow hedges	10	11	12
Change in net periodic pension and postretirement costs	(70)	123	(1)
Foreign currency translation adjustments	(13)	(9)	7
Total comprehensive income	3,700	5,776	5,018
Parent Company [Member]
Shareholders’ net income	6,025	6,104	4,572
Other comprehensive (loss) income, net of tax:
Change in net unrealized gains/losses on investments	(2,249)	(455)	428
Change in non-credit component of impairment losses on investments, net of tax	(3)	(2)	0
Change in net unrealized gains/losses on cash flow hedges	10	11	12
Change in net periodic pension and postretirement costs	(70)	123	(1)
Foreign currency translation adjustments	(13)	(9)	7
Other comprehensive income (loss)	(2,325)	(328)	446
Total comprehensive income	$ 3,700	$ 5,776	$ 5,018