PRO FORMA FINANCIAL INFORMATION - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income attributable to common stockholders, per:
Weighted-average number of common shares outstanding, basic (in shares)	178,317,769	112,149,638	178,309,127	81,150,846
Weighted-average number of common shares outstanding, diluted (in shares)	178,941,213	112,418,100	178,729,853	81,429,044
Care Capital Properties
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues		$ 162,128		$ 480,287
Net income attributable to common stockholders		$ 37,823		$ 209,674
Net income attributable to common stockholders, per:
Basic common share (in dollars per share)		$ 0.24		$ 1.31
Diluted common share (in dollars per share)		$ 0.24		$ 1.31
Weighted-average number of common shares outstanding, basic (in shares)		160,189,442		159,685,873
Weighted-average number of common shares outstanding, diluted (in shares)		160,457,904		159,964,071