Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 805	$ 817	$ 1,370	$ 1,745
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	73	417	159	416
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	3,274	2,046	(1,395)	5,242
Reclassification adjustment for (gains) losses on fixed maturity securities included in net earnings	75	(25)	145	(43)
Unrealized gains (losses) on derivatives during period	(1)	(1)	(5)	(4)
Pension liability adjustment during period	0	(2)	0	5
Total other comprehensive income (loss) before income taxes	3,421	2,435	(1,096)	5,616
Income tax expense (benefit) related to items of other comprehensive income (loss)	859	552	(383)	1,403
Other comprehensive income (loss), net of income taxes	2,562	1,883	(713)	4,213
Total comprehensive income (loss)	$ 3,367	$ 2,700	$ 657	$ 5,958