Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Net earned premiums, principally supplemental health insurance		$ 3,849	$ 4,441	$ 8,028	$ 9,034
Net investment income		937	993	1,840	1,918
Net investment gains (losses)		564	89	686	396
Other income (loss)		50	41	118	85
Total revenues		5,400	5,564	10,672	11,433
Benefits and expenses:
Benefits and claims, net		2,298	2,653	4,785	5,387
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs		268	280	590	592
Insurance commissions		279	315	579	641
Insurance and other expenses	[1]	799	881	1,629	1,712
Interest expense		55	62	112	124
Total acquisition and operating expenses		1,401	1,538	2,910	3,069
Total benefits and expenses		3,699	4,191	7,695	8,456
Earnings before income taxes		1,701	1,373	2,977	2,977
Income taxes		313	268	557	579
Net earnings		$ 1,388	$ 1,105	$ 2,420	$ 2,398
Net earnings per share:
Basic (in dollars per share)		$ 2.17	$ 1.63	$ 3.75	$ 3.51
Diluted (in dollars per share)		$ 2.16	$ 1.62	$ 3.73	$ 3.49
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic (in shares)		640,707	678,050	645,205	683,464
Diluted (in shares)		643,243	680,920	648,010	686,400
Cash dividends per share		$ 0.40	$ 0.33	$ 0.80	$ 0.66

[1] Includes expense of $48 in the three- and six-month periods ended June 30, 2021 for the early extinguishment of debt.