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, 2019	Mar. 31, 2018
Numerator:
Net income (loss)	$ (38,606)	$ (98,487)
Less: Net income (loss) attributable to noncontrolling interests	400	481
Net income (loss) attributable to Quorum Health Corporation	$ (39,006)	$ (98,968)
Denominator:
Weighted-average shares outstanding - basic and diluted	29,438,015	28,454,336
Earnings (loss) per share attributable to Quorum Health Corporation stockholders - basic and diluted	$ (1.33)	$ (3.48)