DESCRIPTION OF BUSINESS (Details)	9 Months Ended
	Sep. 30, 2021 tenant property segment
Real estate properties
Number of Properties Held for Sale	1,300
Number of Reportable Segments | segment	3
Largest tenants | tenant	3
Brookdale Senior Living
Real estate properties
Number of Properties Held for Sale	121
Ardent
Real estate properties
Number of Properties Held for Sale	12
Kindred
Real estate properties
Number of Properties Held for Sale	32
Triple-Net Leased Properties
Real estate properties
Number of Properties Held for Sale	354
Seniors Housing Communities
Real estate properties
Number of Properties Held for Sale	551