Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Premiums	$ 28,115	$ 27,274
Services	2,404	2,112
Products	998	751
Investment and other income	191	203
Total revenues	31,708	30,340
Operating costs:
Medical costs	23,208	22,569
Operating costs	5,194	4,614
Cost of products sold	892	682
Depreciation and amortization	360	336
Total operating costs	29,654	28,201
Earnings from operations	2,054	2,139
Interest expense	(160)	(178)
Earnings before income taxes	1,894	1,961
Provision for income taxes	(795)	(721)
Net earnings	1,099	1,240
Earnings attributable to noncontrolling interests	0	(48)
Net earnings attributable to UnitedHealth Group common shareholders	$ 1,099	$ 1,192
Basic net earnings per common share attributable to UnitedHealth Group common shareholders	$ 1.12	$ 1.17
Diluted net earnings per common share attributable to UnitedHealth Group common shareholders	$ 1.10	$ 1.16
Basic weighted-average number of common shares outstanding	983	1,016
Dilutive effect of common share equivalents	13	13
Diluted weighted-average number of common shares outstanding	996	1,029
Anti-dilutive shares excluded from the calculation of dilutive effect of common stock equivalents	9	16
Cash dividends declared per common share	$ 0.2800	$ 0.2125