Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Premiums	$ 226,233	$ 201,478	$ 189,699
Investment and other income	2,324	1,502	1,886
Total revenues	287,597	257,141	242,155
Operating costs:
Medical costs	186,911	159,396	156,440
Operating costs	42,579	41,704	35,193
Cost of products sold	31,034	30,745	28,117
Depreciation and amortization	3,103	2,891	2,720
Total operating costs	263,627	234,736	222,470
Earnings from operations	23,970	22,405	19,685
Interest expense	(1,660)	(1,663)	(1,704)
Earnings before income taxes	22,310	20,742	17,981
Provision for income taxes	(4,578)	(4,973)	(3,742)
Net earnings	17,732	15,769	14,239
Earnings attributable to noncontrolling interests	(447)	(366)	(400)
Net earnings attributable to UnitedHealth Group common shareholders	$ 17,285	$ 15,403	$ 13,839
Earnings per share attributable to UnitedHealth Group common shareholders:
Basic	$ 18.33	$ 16.23	$ 14.55
Diluted	$ 18.08	$ 16.03	$ 14.33
Basic weighted-average number of common shares outstanding	943	949	951
Dilutive effect of common share equivalents	13	12	15
Diluted weighted-average number of common shares outstanding	956	961	966
Anti-dilutive shares excluded from the calculation of dilutive effect of common share equivalents	1	8	10
Products
Revenue from Products and Services	$ 34,437	$ 34,145	$ 31,597
Services
Revenue from Products and Services	$ 24,603	$ 20,016	$ 18,973