Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 887	$ 852	$ 898
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	61	176	(647)
Reclassification adjustment for realized (gains) losses included in net earnings	24	34	14
Total net unrealized gains (losses) on securities	85	210	(633)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period	(12)	(9)	(29)
Reclassification adjustment for investment income included in net earnings	19	21	0
Total net unrealized gains (losses) on cash flow hedges	7	12	(29)
Foreign currency translation adjustments	(13)	3	(2)
Pension and other postretirement plan adjustments	0	(1)	2
Other comprehensive income (loss), net of tax	79	224	(662)
Comprehensive income	$ 966	$ 1,076	$ 236