DESCRIPTION OF BUSINESS (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) property tenant segment	Mar. 31, 2021 USD ($)
Real estate properties
Number of Properties Held for Sale	1,300
Number of Reportable Segments | segment	3
Largest tenants | tenant	3
COVID-19 Impact
Real estate properties
HHS Grants Received of Provider Relief Fund | $	$ 34.0	$ 13.6
Brookdale Senior Living
Real estate properties
Number of Properties Held for Sale	121
Ardent
Real estate properties
Number of Properties Held for Sale	30
Kindred
Real estate properties
Number of Properties Held for Sale	29
Triple-Net Leased Properties
Real estate properties
Number of Properties Held for Sale	332
Seniors Housing Communities
Real estate properties
Number of Properties Held for Sale	555