DISPOSITIONS AND IMPAIRMENTS - 2025 Disposition Activity (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($) property	Dec. 31, 2025 USD ($) property	Dec. 31, 2024 USD ($) property	Dec. 31, 2023 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Segment Properties | property		1,374
Proceeds from real estate disposals		$ 213,161	$ 329,094	$ 399,534
Gain on real estate dispositions		38,579	57,009	62,119
Sales-type Lease, Lease Receivable		800	1,400
Dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from real estate disposals		223,200	315,100	399,500
Gain on real estate dispositions		$ 17,800	$ 57,000	$ 62,100
Dispositions | SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Segment Properties | property		3	19	7
Dispositions | Outpatient Medical Buildings And Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Segment Properties | property		6	12	10
Dispositions | NNN
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Segment Properties | property		14	24	9
Dispositions | Outpatient medical and research portfolio (OM&R)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Segment Properties | property	12
Gain on real estate dispositions	$ 20,800
Sales-type Lease, Lease Receivable	$ 38,500