DISPOSITIONS AND IMPAIRMENTS - Real Estate Impairments (Details) - Depreciation and amortization - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate impairments	$ 96.2	$ 86.0	$ 226.6
OM&R
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate impairments	57.3	1.5	19.2
NNN
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate impairments	3.7	40.7	16.9
Senior Housing Operating Portfolio (SHOP)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate impairments	$ 35.2	$ 43.8	$ 190.5