DESCRIPTION OF BUSINESS (Details)	9 Months Ended
	Sep. 30, 2023 tenant property segment
Real estate properties
Number of real estate properties	1,400
Number of reportable segments | segment	3
Largest tenants | tenant	3
Outpatient Medical and Research Portfolio
Real estate properties
Number of real estate properties	461
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	335
Seniors Housing Communities
Real estate properties
Number of real estate properties	594