Annual report pursuant to Section 13 and 15(d)

Equity and Mezzanine Equity - Dividends Declared (Detail)

v3.20.4
Equity and Mezzanine Equity - Dividends Declared (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Senior Common Stock      
Dividends Payable [Line Items]      
Common stock, cash paid (in dollars per share) $ 1.0500 $ 1.0500 $ 1.0500
Series A Preferred Stock      
Dividends Payable [Line Items]      
Preferred stock, cash paid (in dollars per share) 0 1.6038191 1.9374996
Series B Preferred Stock      
Dividends Payable [Line Items]      
Preferred stock, cash paid (in dollars per share) 0 1.5521 1.8750
Series D Preferred Stock      
Dividends Payable [Line Items]      
Preferred stock, cash paid (in dollars per share) 1.7500 1.7500 1.7500
Series E Preferred Stock      
Dividends Payable [Line Items]      
Preferred stock, cash paid (in dollars per share) 1.656252 0.404900 0
Series F Preferred Stock      
Dividends Payable [Line Items]      
Preferred stock, cash paid (in dollars per share) 0.7500 0 0
Common Stock and Non-controlling OP Units      
Dividends Payable [Line Items]      
Common stock, cash paid (in dollars per share) $ 1.5018 $ 1.5000 $ 1.5000