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Equity and Mezzanine Equity - Dividends Paid (Detail) - $ / shares
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Senior Common Stock    
Dividends Payable [Line Items]    
Common Stock, dividends paid (in dollars per share) $ 0.2625 $ 0.2625
Series D Preferred Stock    
Dividends Payable [Line Items]    
Preferred Stock, dividends paid (in dollars per share) 0 0.4374999
Series E Preferred Stock    
Dividends Payable [Line Items]    
Preferred Stock, dividends paid (in dollars per share) 0.414063 0.414063
Series F Preferred Stock    
Dividends Payable [Line Items]    
Preferred Stock, dividends paid (in dollars per share) 0.375 0.375
Series G Preferred Stock    
Dividends Payable [Line Items]    
Preferred Stock, dividends paid (in dollars per share) 0.375 0
Common Stock    
Dividends Payable [Line Items]    
Common Stock, dividends paid (in dollars per share) $ 0.37620 $ 0.37545