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Equity - Stock Based Compensation (Details)
3 Months Ended 12 Months Ended
Apr. 01, 2021
USD ($)
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
item
Restricted stock          
Stock-based incentive plan awards          
Compensation expense, net of capitalization   $ 3,900,000 $ 3,000,000.0    
Restricted Stock and Restricted Stock Units          
Stock-based incentive plan awards          
Vesting service period 3 years        
Awards granted (in units) | shares 25,715        
Grant Date Fair Value $ 113.77        
2019 Stock Incentive Plan | Time Based Restricted Stock Units          
Stock-based incentive plan awards          
Vesting service period   3 years   3 years  
Awards granted (in units) | shares   37,976   312,263  
Grant Date Fair Value   $ 4,300,000   $ 26,300,000  
Weighted average fair value of shares granted during the period (in dollars per share) | $ / shares   $ 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   $ 2,600,000 $ 4,200,000    
2018 LTIP program | LTIP Units          
Stock-based incentive plan awards          
Number of tranches | item         2
Grant Date Fair Value         $ 12,100,000
2018 LTIP program | LTIP Units | Maximum          
Stock-based incentive plan awards          
Grant Date Fair Value         $ 18,200,000
2018 LTIP program | LTIP Units | Tranche A          
Stock-based incentive plan awards          
Vesting rights each year beginning 2021 (as a percent)         50.00%
Performance period         2 years
Awards granted (in units) | shares   38,148      
Grant Date Fair Value   $ 6,100,000     $ 6,100,000
Grant Date Target Value   6,100,000      
2018 LTIP program | LTIP Units | Tranche B          
Stock-based incentive plan awards          
Performance period         3 years
Grant Date Fair Value   6,100,000     $ 6,100,000
Grant Date Target Value   $ 6,100,000      
2019 LTIP program | LTIP Units          
Stock-based incentive plan awards          
Performance period   3 years      
Grant Date Fair Value   $ 9,500,000      
Grant Date Target Value   14,700,000      
2019 LTIP program | LTIP Units | Maximum          
Stock-based incentive plan awards          
Grant Date Target Value   $ 22,100,000      
2021 LTIP program | LTIP Units          
Stock-based incentive plan awards          
Performance period   3 years      
Grant Date Fair Value   $ 5,700,000      
Grant Date Target Value   12,200,000      
2021 LTIP program | LTIP Units | Maximum          
Stock-based incentive plan awards          
Grant Date Fair Value   $ 18,400,000