Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues:
Net earned premiums, principally supplemental health insurance	$ 3,573	$ 3,764	$ 7,262	$ 7,844
Net investment income	999	937	1,942	1,840
Net investment gains (losses)	555	564	678	686
Other income (loss)	45	50	90	118
Total revenues	5,172	5,315	9,972	10,488
Benefits and expenses:
Benefits and claims, excluding reserve remeasurement	2,152	2,299	4,354	4,816
Reserve remeasurement (gains) losses	(54)	(25)	(107)	(59)
Total benefits and claims, net	2,098	2,274	4,247	4,757
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs	202	197	407	405
Insurance commissions	268	279	547	579
Insurance and other expenses	728	802	1,505	1,633
Interest expense	51	55	99	112
Total acquisition and operating expenses	1,249	1,333	2,558	2,729
Total benefits and expenses	3,347	3,607	6,805	7,486
Earnings before income taxes	1,825	1,708	3,167	3,002
Income taxes	191	314	345	561
Net earnings	$ 1,634	$ 1,394	$ 2,822	$ 2,441
Net earnings per share:
Basic (in dollars per share)	$ 2.72	$ 2.18	$ 4.66	$ 3.78
Diluted (in dollars per share)	$ 2.71	$ 2.17	$ 4.64	$ 3.77
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic (in shares)	600,742	640,707	605,945	645,205
Diluted (in shares)	602,929	643,243	608,411	648,010
Cash dividends per share	$ 0.42	$ 0.40	$ 0.84	$ 0.80