SEGMENT INFORMATION - Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Segment Reporting Information
Total Assets	$ 24,530,229	$ 24,725,433
Percentage of consolidated assets	100.00%	100.00%
Operating Segments | Outpatient Medical and Research Portfolio
Segment Reporting Information
Total Assets	$ 6,893,756	$ 6,943,446
Percentage of consolidated assets	28.10%	28.10%
Operating Segments | Triple-Net Leased Properties
Segment Reporting Information
Total Assets	$ 3,902,304	$ 4,120,691
Percentage of consolidated assets	15.90%	16.70%
Operating Segments | SHOP
Segment Reporting Information
Total Assets	$ 12,944,144	$ 12,864,029
Percentage of consolidated assets	52.80%	52.00%
Non-Segment
Segment Reporting Information
Total Assets	$ 790,025	$ 797,267
Percentage of consolidated assets	3.20%	3.20%