SEGMENT INFORMATION - Capital Expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information
Total capital expenditures	$ 900,696	$ 1,802,021	$ 607,296
Operating Segments | SHOP
Segment Reporting Information
Total capital expenditures	423,420	1,463,551	191,891
Operating Segments | Office operations
Segment Reporting Information
Total capital expenditures	472,662	245,546	372,475
Operating Segments | Triple-net leased properties
Segment Reporting Information
Total capital expenditures	$ 4,614	$ 92,924	$ 42,930