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REAL ESTATE OPERATIONS - Mitigation Credits (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2021
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 10, 2021
Real Estate Properties [Line Items]          
Asset Acquisition, Interest Purchase Amount Allocated to Mitigation Credits $ 15.6        
Mitigation Bank          
Real Estate Properties [Line Items]          
Mitigation credits, acquired 0.9        
Asset Acquisition, Consideration Transferred, Contingent Consideration 18.0        
Asset Retained Interest, Previously Recorded Value 6.9        
Mitigation credit and mitigation credit rights   $ 24.7   $ 24.7  
Mitigation credit rights acquired $ 21.6        
Mitigation Credit Sales | Real Estate Operations          
Real Estate Properties [Line Items]          
Gross Sales Price   $ 0.0 $ 0.0    
Land JV          
Real Estate Properties [Line Items]          
Equity method investment, ownership percentage (as a percent)         33.50%
Land JV | Mitigation Bank          
Real Estate Properties [Line Items]          
Equity method investment, ownership percentage (as a percent) 100.00%