Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Premiums and fees	$ 26,187	$ 18,966	$ 18,274
Net investment income	1,144	1,146	1,105
Mail order pharmacy revenues	1,623	1,447	1,420
Other revenues	121	244	254
Realized investment gains (losses):
Other-than-temporary impairments on fixed maturities, net	(11)	(26)	(1)
Other realized investment gains	55	88	76
Total realized investment gains (losses)	44	62	75
Total revenues	29,119	21,865	21,128
Benefits and Expenses
Health Care medical claims expense	14,228	9,125	9,222
Other benefit expenses	3,672	3,365	3,011
Mail order pharmacy cost of goods sold	1,328	1,203	1,169
GMIB fair value (gain) loss	(41)	234	55
Other operating expenses	7,455	6,062	5,869
Total benefits and expenses	26,642	19,989	19,326
Income from Continuing Operations before Income Taxes	2,477	1,876	1,802
Income taxes:
Current	719	398	331
Deferred	134	217	188
Total taxes	853	615	519
Income (loss) from discontinued operations, net of taxes	0	0	0
Net Income	1,624	1,261	1,283
Less: Net Income Attributable to Redeemable Noncontrolling Interest	1	0	0
Less: Net Income Attributable to Other Noncontrolling Interest	0	1	4
Shareholders' Net Income	$ 1,623	$ 1,260	$ 1,279
Basic Earnings Per Share:
Shareholders' net income	$ 5.70	$ 4.65	$ 4.69
Diluted Earnings Per Share:
Shareholders' net income	$ 5.61	$ 4.59	$ 4.65
Dividends Declared Per Share	$ 0.04	$ 0.04	$ 0.04