Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues:
Net earned premiums, principally supplemental health insurance	[1]	$ 13,548	$ 13,440	$ 14,123
Net investment income		4,076	4,116	3,811
Net investment gains (losses)		(572)	1,271	590
Other income (loss)		112	100	177
Total revenues		17,164	18,927	18,701
Benefits and expenses:
Benefits and claims, excluding reserve remeasurement		7,987	8,008	8,594
Reserve remeasurement (gains) losses		(694)	(558)	(383)
Total benefits and claims, net		7,293	7,450	8,211
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs		874	851	816
Insurance commissions		991	998	1,052
Insurance and other expenses		3,253	3,014	3,165
Interest expense		220	197	195
Total acquisition and operating expenses		5,338	5,060	5,228
Total benefits and expenses		12,631	12,510	13,439
Earnings before income taxes		4,533	6,417	5,262
Income tax expense (benefit):
Current		1,115	1,330	1,663
Deferred		(228)	(356)	(1,060)
Income taxes		887	974	603
Net earnings		$ 3,646	$ 5,443	$ 4,659
New earnings per share:
Basic (in dollars per share)		$ 6.84	$ 9.68	$ 7.81
Diluted (in dollars per share)		$ 6.82	$ 9.63	$ 7.78
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic (in shares)		532,885	562,492	596,173
Diluted (in shares)		534,878	565,015	598,745
Cash dividends per share		$ 2.32	$ 2.00	$ 1.68

[1] Includes a gain (loss) of $(52), $(81) and $20 in 2025, 2024 and 2023, respectively, related to remeasurement of the deferred profit liability for limited-payment contracts.