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Equity - Stock Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 01, 2022
Mar. 18, 2022
Mar. 11, 2022
Mar. 31, 2022
Mar. 31, 2022
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Restricted stock                  
Stock-based incentive plan awards                  
Compensation expense, net of capitalization           $ 7.2 $ 5.8    
Restricted stock | Employees                  
Stock-based incentive plan awards                  
Vesting service period 3 years                
Awards granted (in units) 143,518                
Weighted average fair value of shares granted during the year (in dollars per share) $ 131.56                
Restricted stock | Non-employee Director                  
Stock-based incentive plan awards                  
Shares awarded (in shares)           16,741      
Weighted average fair value (in dollars per share)           $ 113.01      
Vesting service period           1 year      
2019 Stock Incentive Plan | Time Based Restricted Stock Units                  
Stock-based incentive plan awards                  
Vesting rights each year beginning 2022 (as a percent)                 33.33%
Vesting service period         3 years     3 years 3 years
Awards granted (in units)         52,673     37,976 312,263
Grant Date Fair Value         $ 6.9     $ 4.3 $ 26.3
Weighted average fair value of shares granted during the year (in dollars per share)   $ 130.84 $ 130.05         $ 112.92 $ 84.37
LTIP programs                  
Stock-based incentive plan awards                  
Percent of distributions of Operating Partnership that participants are entitled to receive during performance period           10.00%      
Compensation expense, net of capitalization           $ 16.2 $ 14.1    
2019 LTIP program | LTIP Units                  
Stock-based incentive plan awards                  
Performance period           3 years      
Awards granted (in units)       72,442   72,442      
Grant Date Fair Value           $ 9.5      
Grant Date Target Value           $ 14.7      
2021 LTIP program | LTIP Units                  
Stock-based incentive plan awards                  
Performance period           3 years      
Grant Date Fair Value           $ 5.7      
Grant Date Target Value           $ 12.2      
2021 LTIP program | Time Based Restricted Stock Units | Maximum                  
Stock-based incentive plan awards                  
Grant Date Fair Value               $ 18.4  
2022 LTIP program | LTIP Units                  
Stock-based incentive plan awards                  
Performance period           3 years      
Grant Date Target Value           $ 13.7      
2022 LTIP program | LTIP Units | Maximum                  
Stock-based incentive plan awards                  
Grant Date Fair Value         $ 20.6