Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Premiums	$ 9,803	$ 9,012	$ 19,774	$ 18,011
Net investment income	340	352	686	681
Total revenues	38,819	11,480	76,765	22,893
Benefits and Expenses
Medical costs and other benefit expenses	7,576	6,845	15,196	13,617
Pharmacy and other service costs	24,963	613	49,013	1,174
Selling, general and administrative expenses	3,380	2,837	6,683	5,582
Amortization of other acquired intangible assets	737	24	1,480	51
Total benefits and expenses	36,656	10,319	72,372	20,424
Income from operations	2,163	1,161	4,393	2,469
Interest expense and other	(428)	(56)	(880)	(113)
Net realized investment gains (losses)	23	(3)	33	(36)
Income (loss) before income taxes	1,758	1,102	3,546	2,320
Total income taxes	348	294	764	595
Net Income	1,410	808	2,782	1,725
Less: net income (loss) attributable to noncontrolling interests	2	2	6	4
Shareholders' net income	$ 1,408	$ 806	$ 2,776	$ 1,721
Shareholders' net income per share:
Basic	$ 3.73	$ 3.32	$ 7.33	$ 7.10
Diluted	$ 3.70	$ 3.29	$ 7.26	$ 7.01
Fees and other revenues [Member]
Revenues
Pharmacy revenues, fees and other revenues	$ 2,388	$ 1,358	$ 4,838	$ 2,726
Pharmacy revenues [Member]
Revenues
Pharmacy revenues, fees and other revenues	$ 26,288	$ 758	$ 51,467	$ 1,475