Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 176,811	$ 219,375	$ 486,613	$ 753,721
Other comprehensive income (loss):
Foreign currency translation adjustment	24,242	(9,121)	(22,460)	(23,184)
Other comprehensive income (loss) before tax	24,242	(9,121)	(22,460)	(23,184)
Income tax expense (benefit) related to items of other comprehensive income (loss)	6,685	109	5,809	(1,958)
Total other comprehensive income (loss), net of tax	17,557	(9,230)	(28,269)	(21,226)
Comprehensive income	194,368	210,145	458,344	732,495
Less: Comprehensive income (loss) attributable to noncontrolling interests	(6,003)	1,024	(14,176)	1,255
Comprehensive income attributable to UHS	$ 200,371	$ 209,121	$ 472,520	$ 731,240