Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Net premiums, principally supplemental health insurance	$ 4,681	$ 4,706	$ 9,373	$ 9,450
Net investment income	878	862	1,756	1,699
Realized investment gains (losses):
Other-than-temporary impairment losses realized and loan loss reserves	(2)	(5)	(4)	(12)
Other gains (losses)	(64)	8	9	(119)
Total realized investment gains (losses)	(66)	3	5	(131)
Other income (loss)	18	18	34	36
Total revenues	5,511	5,589	11,168	11,054
Benefits and expenses:
Benefits and claims, net	2,964	3,031	5,932	6,073
Acquisition and operating expenses:
Amortization of deferred policy acquisition costs	309	303	649	617
Insurance commissions	329	338	661	676
Insurance and other expenses	743	732	1,460	1,463
Interest expense	57	54	115	111
Total acquisition and operating expenses	1,438	1,427	2,885	2,867
Total benefits and expenses	4,402	4,458	8,817	8,940
Earnings before income taxes	1,109	1,131	2,351	2,114
Income taxes	292	299	606	564
Net earnings	$ 817	$ 832	$ 1,745	$ 1,550
Net earnings per share:
Basic (in dollars per share)	$ 1.10	$ 1.08	$ 2.33	$ 2.00
Diluted (in dollars per share)	$ 1.09	$ 1.07	$ 2.32	$ 1.98
Weighted-average outstanding common shares used in computing earnings per share (In thousands):
Basic (in shares)	745,153	772,949	748,271	775,734
Diluted (in shares)	748,849	777,807	752,302	780,814
Cash dividends per share	$ 0.27	$ 0.26	$ 0.54	$ 0.52