Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] £ in Thousands, shares in Millions, $ in Millions		1 Months Ended
	May 01, 2017 USD ($) Hospital Bed shares	Apr. 30, 2017 GBP (£)
Birmingham, England
Subsequent Event [Line Items]
Purchase price of acquisition | £		£ 2,720
Term of lease, years		15 years
Total development costs anticipated | £		£ 30,000
Community Health Systems, Inc. [Member] | Florida, Ohio, and Pennsylvania [Member]
Subsequent Event [Line Items]
Purchase price of acquisition	$ 301.3
Number of facilities acquired | Hospital	8
Acute Care Hospital [Member] | IDAHO, Lewiston | St. Joseph Regional Medical Center [Member]
Subsequent Event [Line Items]
Number of beds acquired | Bed	145
Purchase price of acquisition	$ 87.5
Public Offering [Member]
Subsequent Event [Line Items]
Common stock, shares issued | shares	43.1
Proceeds from sale of common shares / units, net of offering costs	$ 547.6
Public Offering [Member] | Over-Allotment Option [Member]
Subsequent Event [Line Items]
Common stock, shares issued | shares	5.6