Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net earnings, including noncontrolling interests	$ 898	$ 1,995	$ 721
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	(647)	(218)	700
Reclassification adjustment for realized (gains) losses included in net earnings	14	(17)	(307)
Reclassification adjustment for unrealized gains of subsidiaries sold	0	(884)	0
Total net unrealized gains (losses) on securities	(633)	(1,119)	393
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period	(29)	(1)	56
Reclassification adjustment for investment income included in net earnings	0	(11)	(32)
Reclassification adjustment for unrealized gains on cash flow hedges of subsidiaries sold	0	(29)	0
Total net unrealized gains (losses) on cash flow hedges	(29)	(41)	24
Foreign currency translation adjustments	(2)	(2)	(1)
Pension and other postretirement plans adjustments (“OPRP”):
Unrealized holding gains (losses) on pension and OPRP arising during the period	2	(1)	(1)
Reclassification adjustment for pension settlement loss included in net earnings	0	9	1
Total pension and OPRP adjustments	2	8	0
Other comprehensive income (loss), net of tax	(662)	(1,154)	416
Total comprehensive income, net of tax	236	841	1,137
Less: Comprehensive income (loss) attributable to noncontrolling interests	0	0	(9)
Comprehensive income attributable to shareholders	$ 236	$ 841	$ 1,146