Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,293	$ 566
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(581)	85
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	(2,003)	(4,605)
Reclassification adjustment for (gains) losses on fixed maturity securities included in net earnings	20	7
Unrealized gains (losses) on derivatives during period	0	(4)
Pension liability adjustment during period	5	0
Total other comprehensive income (loss) before income taxes	(2,559)	(4,517)
Income tax expense (benefit) related to items of other comprehensive income (loss)	(432)	(1,242)
Other comprehensive income (loss), net of income taxes	(2,127)	(3,275)
Total comprehensive income (loss)	$ (834)	$ (2,709)