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Earnings Per Share - Additional Information (Detail) - shares
shares in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule Of Earnings Per Share [Line Items]      
Forward equity agreement 2.2    
Restricted Stock Awards [Member]      
Schedule Of Earnings Per Share [Line Items]      
Options to purchase common shares not included in the computation of diluted EPS 0.9 0.9 0.7
Stock options [Member]      
Schedule Of Earnings Per Share [Line Items]      
Options to purchase common shares not included in the computation of diluted EPS 0.3 0.3 0.3