SEGMENT INFORMATION - Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information
Total capital expenditures	$ 129,401	$ 143,066	$ 242,057	$ 561,177
Gain on foreclosure of real estate	29,127	0	29,127	0
Operating Segments | SHOP
Segment Reporting Information
Total capital expenditures	87,548	55,540	155,680	198,943
Operating Segments | Outpatient Medical and Research Portfolio
Segment Reporting Information
Total capital expenditures	39,814	85,752	80,618	359,826
Operating Segments | Triple-Net Leased Properties
Segment Reporting Information
Total capital expenditures	$ 2,039	$ 1,774	$ 5,759	$ 2,408