Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions		Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock
Balance, beginning of period at Dec. 31, 2021		$ 17,031	$ 135	$ 2,529	$ 40,963	$ (8,411)	$ (18,185)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		4,418	0	0	4,418	0	0
Unrealized foreign currency translation gains (losses) during period, net of income taxes		(1,579)	0	0	0	(1,579)	0
Unrealized gains (losses) on fixed maturity securities during the period, net of income taxes and reclassification adjustments		(10,304)	0	0	0	(10,304)	0
Unrealized gains (losses) on derivatives during period, net of income taxes		3	0	0	0	3	0
Effect of changes in discount rate assumptions during period, net of income taxes		13,732	0	0	0	13,732	0
Pension liability adjustment during period, net of income taxes		130	0	0	0	130	0
Dividends to shareholders	[1]	(1,014)	0	0	(1,014)	0	0
Exercise of stock options		12	0	12	0	0	0
Share-based compensation		62	0	62	0	0	0
Purchases of treasury stock		(2,425)	0	0	0	0	(2,425)
Treasury stock reissued		74	0	38	0	0	36
Balance, end of period at Dec. 31, 2022		20,140	135	2,641	44,367	(6,429)	(20,574)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		4,659	0	0	4,659	0	0
Unrealized foreign currency translation gains (losses) during period, net of income taxes		(505)	0	0	0	(505)	0
Unrealized gains (losses) on fixed maturity securities during the period, net of income taxes and reclassification adjustments		1,841	0	0	0	1,841	0
Unrealized gains (losses) on derivatives during period, net of income taxes		5	0	0	0	5	0
Effect of changes in discount rate assumptions during period, net of income taxes		(460)	0	0	0	(460)	0
Pension liability adjustment during period, net of income taxes		28	0	0	0	28	0
Dividends to shareholders	[1]	(1,033)	0	0	(1,033)	0	0
Exercise of stock options		13	0	13	0	0	0
Share-based compensation		75	1	74	0	0	0
Purchases of treasury stock		(2,854)	0	0	0	0	(2,854)
Treasury stock reissued		76	0	43	0	0	33
Balance, end of period at Dec. 31, 2023		21,985	136	2,771	47,993	(5,520)	(23,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings		5,443	0	0	5,443	0	0
Unrealized foreign currency translation gains (losses) during period, net of income taxes		(929)	0	0	0	(929)	0
Unrealized gains (losses) on fixed maturity securities during the period, net of income taxes and reclassification adjustments		(1,115)	0	0	0	(1,115)	0
Unrealized gains (losses) on derivatives during period, net of income taxes		2	0	0	0	2	0
Effect of changes in discount rate assumptions during period, net of income taxes		4,566	0	0	0	4,566	0
Pension liability adjustment during period, net of income taxes		18	0	0	0	18	0
Dividends to shareholders	[1]	(1,159)	0	0	(1,159)	0	0
Exercise of stock options		9	0	9	0	0	0
Share-based compensation		65	0	65	0	0	0
Purchases of treasury stock		(2,868)	0	0	0	0	(2,868)
Treasury stock reissued		81	0	49	0	0	32
Balance, end of period at Dec. 31, 2024		$ 26,098	$ 136	$ 2,894	$ 52,277	$ (2,978)	$ (26,231)

[1] Dividends to shareholders are recorded in the period in which they are declared.