Condensed Consolidated Statements Of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Premiums	$ 13,712	$ 12,955	$ 41,236	$ 39,556
Services	381	223	1,090	706
Investment income	113	104	418	316
Total revenues	14,206	13,282	42,744	40,578
Operating expenses:
Benefits	11,243	10,642	34,449	32,857
Operating costs	1,900	1,688	5,410	4,694
Merger termination fee and related costs, net	0	0	0	(947)
Depreciation and amortization	102	94	302	278
Total operating expenses	13,245	12,424	40,161	36,882
Income (loss) from operations	961	858	2,583	3,696
Loss on sale of business	(4)	0	786	0
Interest expense	53	59	159	166
Other expense, net	11	0	11	0
Income (loss) before income taxes and equity in net earnings	901	799	1,627	3,530
Provision for income taxes	266	300	308	1,266
Equity in net earnings of Kindred at Home	9	0	9	0
Net income	$ 644	$ 499	$ 1,328	$ 2,264
Basic earnings per common share (in dollars per share)	$ 4.68	$ 3.46	$ 9.64	$ 15.56
Diluted earnings per common share (in dollars per share)	4.65	3.44	9.58	15.44
Dividends declared per common share (in dollars per share)	$ 0.5	$ 0.40	$ 1.5	$ 1.20