Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Premiums	$ 9,935	$ 8,994	$ 29,709	$ 27,005
Net investment income	349	355	1,035	1,036
Total revenues	38,556	11,457	115,321	34,350
Benefits and Expenses
Pharmacy and other service costs	24,552	602	73,565	1,776
Medical costs and other benefit expenses	7,734	6,803	22,930	20,420
Selling, general and administrative expenses	3,413	2,872	10,096	8,454
Amortization of other acquired intangible assets	734	48	2,214	99
Total benefits and expenses	36,433	10,325	108,805	30,749
Income from operations	2,123	1,132	6,516	3,601
Interest expense and other	(411)	(99)	(1,291)	(212)
Net realized investment gains (losses)	51	0	84	(36)
Income (loss) before income taxes	1,763	1,033	5,309	3,353
Total income taxes	409	259	1,173	854
Net Income	1,354	774	4,136	2,499
Less: net income (loss) attributable to noncontrolling interests	3	2	9	6
Shareholders' net income	$ 1,351	$ 772	$ 4,127	$ 2,493
Shareholders' net income per share:
Basic	$ 3.60	$ 3.18	$ 10.94	$ 10.28
Diluted	$ 3.57	$ 3.14	$ 10.83	$ 10.14
Fees and other revenues [Member]
Revenues
Pharmacy revenues, fees and other revenues	$ 2,285	$ 1,361	$ 7,123	$ 4,087
Pharmacy revenues [Member]
Revenues
Pharmacy revenues, fees and other revenues	$ 25,987	$ 747	$ 77,454	$ 2,222