Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues
Premiums	$ 30,626	$ 29,642	$ 27,214
Fees and other revenues	4,760	4,488	4,141
Net investment income	1,147	1,153	1,166
Mail order pharmacy revenues	2,966	2,536	2,239
Realized investment gains (losses):
Other-than-temporary impairments on fixed maturities	(35)	(112)	(36)
Other realized investment gains (losses), net	204	169	190
Net realized investment gains (losses)	169	57	154
Total revenues	39,668	37,876	34,914
Benefits and Expenses
Global Health Care medical costs	19,009	18,354	16,694
Other benefit expenses	5,477	4,936	4,640
Mail order pharmacy costs	2,468	2,134	1,907
Other operating expenses	9,584	8,982	8,174
Amortization of other acquired intangible assets, net	151	143	195
Total benefits and expenses	36,689	34,549	31,610
Income before Income Taxes	2,979	3,327	3,304
Income taxes (benefits):
Current	1,062	1,229	1,232
Deferred	74	21	(22)
Total income taxes	1,136	1,250	1,210
Net Income	1,843	2,077	2,094
Less: Net Income (Loss) Attributable to Noncontrolling Interests	(24)	(17)	(8)
Shareholders' Net Income	$ 1,867	$ 2,094	$ 2,102
Shareholders' Net Income Per Share:
Basic	$ 7.31	$ 8.17	$ 7.97
Diluted	7.19	8.04	7.83
Dividends Declared Per Share	$ 0.04	$ 0.04	$ 0.04