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Share-Based Compensation - 2021 Equity Incentive Plan (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jun. 30, 2021
Class of Stock [Line Items]        
Required retirement notice period 6 months      
2021 Equity Incentive Plan | Stock options        
Class of Stock [Line Items]        
Expiration period 10 years      
2021 Equity Incentive Plan | Stock options | Non-Management Trustees        
Class of Stock [Line Items]        
Vesting period     4 years  
2021 Equity Incentive Plan | Restricted stock units | Minimum        
Class of Stock [Line Items]        
Vesting period 1 year 1 year 1 year  
2021 Equity Incentive Plan | Restricted stock units | Maximum        
Class of Stock [Line Items]        
Vesting period 4 years 4 years 4 years  
2021 Equity Incentive Plan | Restricted stock units | Non-Management Trustees        
Class of Stock [Line Items]        
Vesting period 1 year 1 year 1 year  
2021 Equity Incentive Plan | Performance Share Units (PSU's)        
Class of Stock [Line Items]        
Vesting period 3 years      
Award requisite service period 3 years      
2021 Equity Incentive Plan | Performance Share Units (PSU's) | Minimum        
Class of Stock [Line Items]        
Award vesting rights, percentage 0.00%      
2021 Equity Incentive Plan | Performance Share Units (PSU's) | Maximum        
Class of Stock [Line Items]        
Award vesting rights, percentage 200.00%      
2021 Equity Incentive Plan | Class A Common Shares/Units        
Class of Stock [Line Items]        
Shares available for issuance (in shares)       9,544,095