Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,105	$ 805	$ 2,398	$ 1,370
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	25	73	(557)	159
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	1,522	3,274	(481)	(1,395)
Reclassification adjustment for (gains) losses on fixed maturity securities included in net earnings	(5)	75	15	145
Unrealized gains (losses) on derivatives during period	1	(1)	1	(5)
Pension liability adjustment during period	0	0	6	0
Total other comprehensive income (loss) before income taxes	1,543	3,421	(1,016)	(1,096)
Income tax expense (benefit) related to items of other comprehensive income (loss)	331	859	(101)	(383)
Other comprehensive income (loss), net of income taxes	1,212	2,562	(915)	(713)
Total comprehensive income (loss)	$ 2,317	$ 3,367	$ 1,483	$ 657