v3.26.1
Equity - Stock Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Apr. 01, 2026
Mar. 11, 2026
Feb. 05, 2026
Jan. 01, 2026
Mar. 03, 2025
Aug. 29, 2024
Mar. 06, 2024
Mar. 01, 2023
Mar. 18, 2022
Mar. 11, 2022
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2021
Restricted stock                                
Stock-based incentive plan awards                                
Compensation expense, net of capitalization                     $ 6.0 $ 6.3        
Restricted stock | Employees | Subsequent Event                                
Stock-based incentive plan awards                                
Awards granted (in units) 94,596                              
Weighted average fair value of shares granted during the year (in dollars per share) $ 186.53                              
Vesting service period (in years) 3 years                              
Restricted stock | Certain employees                                
Stock-based incentive plan awards                                
Awards granted (in units)       2,699                        
Weighted average fair value of shares granted during the year (in dollars per share)       $ 184.22                        
Vesting service period (in years)       3 years                        
Restricted stock | Non-employee Director                                
Stock-based incentive plan awards                                
Awards granted (in units)     299                          
Weighted average fair value of shares granted during the year (in dollars per share)     $ 195.59                          
Vesting service period (in years)     1 year                          
2019 Stock Incentive Plan | Time Based Restricted Stock Units                                
Stock-based incentive plan awards                                
Grant date fair value   $ 7.6     $ 7.5   $ 8.2 $ 7.9             $ 6.9 $ 4.3
Awards granted (in units)   40,099     39,949   53,679 64,852 52,673 52,673           37,976
Weighted average fair value of shares granted during the year (in dollars per share)   $ 189.56     $ 187.78   $ 152.32 $ 121.25 $ 130.84 $ 130.05           $ 112.92
Vesting service period (in years)   3 years     3 years   3 years 3 years             3 years 3 years
LTIP programs                                
Stock-based incentive plan awards                                
Percent of distributions of Operating Partnership that participants are entitled to receive during performance period (in %)                     10.00%          
Compensation expense, net of capitalization                     $ 52.0 $ 10.4        
2021 LTIP program | LTIP Units                                
Stock-based incentive plan awards                                
Performance period (in years)                               3 years
Grant date fair value                     $ 5.7          
LTIP Units Earned                     209,784          
Grant date target value                     $ 12.2          
2021 LTIP program | LTIP 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 (in years)                             3 years  
LTIP Units Earned                     107,462          
Grant date target value                     $ 13.7          
2022 LTIP program | LTIP Units | Maximum                                
Stock-based incentive plan awards                                
Grant date fair value                             $ 20.6  
2023 LTIP program | LTIP Units                                
Stock-based incentive plan awards                                
Performance period (in years)                           3 years    
LTIP Units Earned                     380,344          
Grant date target value                     $ 23.6          
2023 LTIP program | LTIP Units | Maximum                                
Stock-based incentive plan awards                                
Grant date fair value                           $ 42.5    
2024 LTIP program | LTIP Units                                
Stock-based incentive plan awards                                
Performance period (in years)                         3 years      
Grant date target value                     24.5          
2024 LTIP program | LTIP Units | Maximum                                
Stock-based incentive plan awards                                
Grant date fair value                         $ 44.1      
2025 LTIP program | LTIP Units                                
Stock-based incentive plan awards                                
Performance period (in years)                       3 years        
Grant date target value                     $ 30.0          
2025 LTIP program | LTIP Units | Maximum                                
Stock-based incentive plan awards                                
Grant date fair value                       $ 48.0        
2026 LTIP Awards | LTIP Units                                
Stock-based incentive plan awards                                
Performance period (in years)                     3 years          
Grant date target value                     $ 30.4          
2026 LTIP Awards | LTIP Units | Maximum                                
Stock-based incentive plan awards                                
Grant date fair value                     $ 48.6          
2024 OPI LTIP Awards | LTIP Units                                
Stock-based incentive plan awards                                
Grant date fair value           $ 67.4                    
Awards granted (in units)           406,976                    
Weighted average fair value of shares granted during the year (in dollars per share)           $ 165.5                    
Vesting service period (in years)           5 years                    
LTIP Units Earned                     406,976          
Grant date target value                     $ 67.4          
2024 OPI LTIP Awards | Restricted stock                                
Stock-based incentive plan awards                                
Grant date fair value           $ 29.6                    
Awards granted (in units)           178,931                    
Weighted average fair value of shares granted during the year (in dollars per share)           $ 165.5                    
Vesting service period (in years)           4 years