Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 888	$ 2,456	$ 3,286	$ 3,826
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(93)	172	(646)	329
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	(316)	1,420	(800)	26
Reclassification adjustment for (gains) losses on fixed maturity securities included in net earnings	(13)	(13)	2	132
Unrealized gains (losses) on derivatives during period	2	2	3	(3)
Pension liability adjustment during period	1	(1)	7	(1)
Total other comprehensive income (loss) before income taxes	(419)	1,580	(1,434)	483
Income tax expense (benefit) related to items of other comprehensive income (loss)	(62)	413	(162)	29
Other comprehensive income (loss), net of income taxes	(357)	1,167	(1,272)	454
Total comprehensive income (loss)	$ 531	$ 3,623	$ 2,014	$ 4,280