Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 215,719	$ 194,323
Other comprehensive income (loss):
Unrealized derivative gains (losses) on cash flow hedges	(14,299)	4,132
Amortization of terminated hedge	(84)	(84)
Foreign currency translation adjustment	5,986	(418)
Other comprehensive income before tax	(8,397)	3,630
Income tax expense related to items of other comprehensive income	(5,360)	1,497
Total other comprehensive income, net of tax	(3,037)	2,133
Comprehensive income	212,682	196,456
Less: Comprehensive income attributable to noncontrolling interests	24,960	20,024
Comprehensive income attributable to UHS	$ 187,722	$ 176,432