Quarterly report pursuant to Section 13 or 15(d)

DISCONTINUED OPERATIONS - Narrative (Details)

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DISCONTINUED OPERATIONS - Narrative (Details)
ft² in Thousands, $ in Millions
12 Months Ended 36 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
ft²
property
Mar. 31, 2023
ft²
Sep. 30, 2022
ft²
Discontinued Operations, Held-for-sale | Office Portfolio        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Number of properties sold | property   1    
Area of property (in square feet)       350
Unrealized loss on real estate held for sale | $ $ 4.4      
Discontinued Operations, Held-for-sale | Waterfront Office Properties        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Area of property (in square feet)     3,700  
Discontinued Operations, Disposed of by Sale | Office Portfolio        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Number of properties sold | property   37    
Area of property (in square feet)   6,300    
Sales proceeds | $   $ 1,000.0