Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net earnings	$ 181	$ 177	$ 632	$ 589
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	178	(64)	170	(55)
Reclassification adjustment for realized (gains) losses included in net earnings	12	7	17	31
Total net unrealized gains (losses) on securities	190	(57)	187	(24)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period	8	(7)	(6)	(20)
Reclassification adjustment for investment income included in net earnings	5	6	16	15
Total net unrealized gains (losses) on cash flow hedges	13	(1)	10	(5)
Foreign currency translation adjustments	(8)	(1)	(14)	2
Other comprehensive income (loss), net of tax	195	(59)	183	(27)
Comprehensive income	$ 376	$ 118	$ 815	$ 562