Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net earnings	$ 29	$ 1,879
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	352	(501)
Unrealized gains (losses) on fixed maturity securities:
Unrealized holding gains (losses) on fixed maturity securities during period	(1,541)	103
Reclassification adjustment for (gains) losses on fixed maturity securities included in net earnings	(40)	(168)
Unrealized gains (losses) on derivatives during period	2	(5)
Effect of changes in discount rate assumptions during period	2,396	1,348
Pension liability adjustment during period	41	2
Total other comprehensive income (loss) before income taxes	1,210	779
Income tax expense (benefit) related to items of other comprehensive income (loss)	91	361
Other comprehensive income (loss), net of income taxes	1,119	418
Total comprehensive income (loss)	$ 1,148	$ 2,297