Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Premiums	$ 27,214	$ 25,575	$ 23,017
Fees and other revenues	4,141	3,601	3,291
Net investment income	1,166	1,164	1,144
Mail order pharmacy revenues	2,239	1,827	1,623
Realized investment gains (losses):
Other-than-temporary impairments on fixed maturities	(36)	(11)	(11)
Other realized investment gains	190	224	55
Total realized investment gains	154	213	44
Total revenues	34,914	32,380	29,119
Benefits and Expenses
Global Health Care medical claims expense	16,694	15,867	14,228
Other benefit expenses	4,640	4,998	3,672
Mail order pharmacy cost of goods sold	1,907	1,509	1,328
Other operating expenses	8,369	7,830	7,414
Total benefits and expenses	31,610	30,204	26,642
Income before Income Taxes	3,304	2,176	2,477
Income taxes:
Current	1,232	501	719
Deferred	(22)	197	134
Total taxes	1,210	698	853
Net Income	2,094	1,478	1,624
Less: Net Income Attributable to Noncontrolling Interests	(8)	2	1
Shareholders' Net Income	$ 2,102	$ 1,476	$ 1,623
Shareholders' Net Income Per Share:
Basic	$ 7.97	$ 5.28	$ 5.70
Diluted	$ 7.83	$ 5.18	$ 5.61
Dividends Declared Per Share	$ 0.04	$ 0.04	$ 0.04