EQUITY - Narrative (Details) - USD ($)					9 Months Ended
	Oct. 02, 2017	Sep. 28, 2017	Aug. 17, 2017	Mar. 21, 2013	Sep. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Preferred stock, shares issued (in shares)				5,800,000	5,750,000	5,750,000
Preferred stock, dividend rate, percentage				7.125%
Price per share (in dollars per share)				$ 25.00
Preferred stock, net proceeds from offering				$ 138,300,000
Preferred stock, dividends in arrears					$ 0
Redemption share price (in dollars per share)				$ 25.00
Convertible preferred stock, conversion price (in dollars per share)				$ 25.00
Convertible preferred stock, shares issued upon conversion (in shares)				1.7864
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax withholding obligations on behalf of employees					2,800,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued as a result of restricted stock unit vestings (in shares)					100,000
Underwritten Public Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares sold in offering (in shares)		16,000,000
Proceeds from offering		$ 322,600,000
Share price (in usd per share)		$ 21.00
Care Capital Properties [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in merger (in shares)			94,000,000
Subsequent Event [Member] | Underwritten Public Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in usd per share)	$ 21.00
Subsequent Event [Member] | Underwriters Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares sold in offering (in shares)	2,400,000.0
Proceeds from offering	$ 48,400,000