Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 151,021	$ 209,070
Other comprehensive income (loss):
Foreign currency translation adjustment	(18,470)	(10,346)
Other comprehensive income (loss) before tax	(18,470)	(10,346)
Income tax expense (benefit) related to items of other comprehensive income (loss)	(944)	(1,466)
Total other comprehensive income (loss), net of tax	(17,526)	(8,880)
Comprehensive income	133,495	200,190
Less: Comprehensive income (loss) attributable to noncontrolling interests	(2,892)	(21)
Comprehensive income attributable to UHS	$ 136,387	$ 200,211