CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (16,477)	$ (25,941)	$ (55,083)	$ (124,428)
Amortization and recognition of unrecognized pension cost components, net of income taxes	48	(189)	97	(75)
Comprehensive income (loss)	(16,429)	(26,130)	(54,986)	(124,503)
Less: Comprehensive income (loss) attributable to noncontrolling interests	396	665	796	1,146
Comprehensive income (loss) attributable to Quorum Health Corporation	$ (16,825)	$ (26,795)	$ (55,782)	$ (125,649)