DESCRIPTION OF BUSINESS (Details)	3 Months Ended
	Mar. 31, 2023 property tenant segment
Real estate properties
Number of real estate properties	1,200
Number of reportable segments | segment	3
Largest tenants | tenant	3
Office Operations
Real estate properties
Number of real estate properties	373
Brookdale Senior Living
Real estate properties
Number of real estate properties	121
Ardent
Real estate properties
Number of real estate properties	30
Ardent MOBs
Real estate properties
Number of real estate properties	19
Kindred
Real estate properties
Number of real estate properties	29
Triple-Net Leased Properties
Real estate properties
Number of real estate properties	312
Seniors Housing Communities
Real estate properties
Number of real estate properties	560