Earnings Per Share (Summary of Computation of Basic and Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income (loss)	$ (27,205)	$ (4,687)
Less: Net income (loss) attributable to noncontrolling interests	356	315
Net income (loss) attributable to Quorum Health Corporation	$ (27,561)	$ (5,002)
Denominator:
Weighted-average shares outstanding - basic and diluted	27,800,597	28,412,054
Basic and diluted earnings (loss) per share attributable to Quorum Health Corporation stockholders	$ (0.99)	$ (0.18)