Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Premiums	$ 7,605	$ 7,347	$ 23,005	$ 22,181
Fees and other revenues	1,156	1,104	3,554	3,359
Net investment income	282	285	848	858
Mail order pharmacy revenues	762	643	2,207	1,846
Realized investment gains (losses):
Other-than-temporary impairments on debt securities	(1)	(58)	(31)	(73)
Other realized investment gains (losses), net	76	68	141	177
Net realized investment gains (losses)	75	10	110	104
Total revenues	9,880	9,389	29,724	28,348
Benefits and Expenses
Global Health Care medical costs	4,692	4,539	14,230	13,720
Other benefit expenses	1,343	1,230	4,125	3,698
Mail order pharmacy costs	638	532	1,842	1,553
Other operating expenses	2,428	2,171	7,038	6,587
Amortization of other acquired intangible assets, net	37	39	115	122
Total benefits and expenses	9,138	8,511	27,350	25,680
Income before Income Taxes	742	878	2,374	2,668
Income taxes (benefits):
Current	210	282	842	965
Deferred	80	52	63	44
Total income taxes	290	334	905	1,009
Net Income	452	544	1,469	1,659
Less: Net Income (Loss) Attributable to Noncontrolling Interests	(4)	(3)	(16)	(9)
Shareholders' Net Income	$ 456	$ 547	$ 1,485	$ 1,668
Shareholders' Net Income Per Share:
Basic	$ 1.78	$ 2.14	$ 5.82	$ 6.51
Diluted	1.76	2.10	5.72	6.40
Dividends Declared Per Share	$ 0	$ 0	$ 0.04	$ 0.04