Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Premiums	$ 44,084	$ 38,938
Products	6,702	6,129
Services	4,104	3,434
Investment and other income	298	222
Total revenues	55,188	48,723
Operating costs:
Medical costs	35,863	32,079
Operating costs	8,506	7,022
Cost of products sold	6,184	5,676
Depreciation and amortization	582	533
Total operating costs	51,135	45,310
Earnings from operations	4,053	3,413
Interest expense	(329)	(283)
Earnings before income taxes	3,724	3,130
Provision for income taxes	(800)	(939)
Net earnings	2,924	2,191
Earnings attributable to noncontrolling interests	(88)	(19)
Net earnings attributable to UnitedHealth Group common shareholders	$ 2,836	$ 2,172
Earnings per share attributable to UnitedHealth Group common shareholders:
Basic	$ 2.94	$ 2.28
Diluted	$ 2.87	$ 2.23
Basic weighted-average number of common shares outstanding	966	954
Dilutive effect of common share equivalents	21	21
Diluted weighted-average number of common shares outstanding	987	975
Anti-dilutive shares excluded from the calculation of dilutive effect of common share equivalents	7	9
Cash dividends declared per common share	$ 0.750	$ 0.625