SEGMENT INFORMATION - Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information
Total capital expenditures	$ 159,871	$ 1,221,944	$ 721,048	$ 1,427,170
Operating Segments | SHOP
Segment Reporting Information
Total capital expenditures	114,453	1,093,773	313,396	1,193,646
Operating Segments | Office Operations
Segment Reporting Information
Total capital expenditures	44,150	52,627	403,976	140,841
Operating Segments | Triple-Net Leased Properties
Segment Reporting Information
Total capital expenditures	$ 1,268	$ 75,544	$ 3,676	$ 92,683