Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net earnings	$ 5,868	$ 5,619	$ 5,673
Other comprehensive loss:
Gross unrealized (losses) gains on investment securities during the period	(123)	476	(543)
Income tax effect	44	(173)	196
Total unrealized (losses) gains, net of tax	(79)	303	(347)
Gross reclassification adjustment for net realized gains included in net earnings	(141)	(211)	(181)
Income tax effect	53	77	66
Total reclassification adjustment, net of tax	(88)	(134)	(115)
Total foreign currency translation losses	(1,775)	(653)	(884)
Other comprehensive loss	(1,942)	(484)	(1,346)
Comprehensive income	3,926	5,135	4,327
Comprehensive income attributable to noncontrolling interests	(55)	0	(48)
Comprehensive income attributable to UnitedHealth Group common stockholders	$ 3,871	$ 5,135	$ 4,279