Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events Subsequent Events (Details)

v3.20.1
Subsequent Events Subsequent Events (Details) - $ / shares
2 Months Ended 3 Months Ended
Apr. 06, 2020
Sep. 30, 2018
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Class of Stock [Line Items]              
Dividends declared per common share (in usd per share)     $ 0       $ 0.47
Common Stock [Member]              
Class of Stock [Line Items]              
Dividends declared per common share (in usd per share)   $ 0.470000   $ 0.400000 $ 0.400000 $ 0.400000  
Declaration Date   Mar. 19, 2019   Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019  
Record Date   Mar. 29, 2019   Dec. 31, 2019 Sep. 30, 2019 Jul. 01, 2019  
Payment Date   Apr. 29, 2019   Jan. 24, 2020 Oct. 28, 2019 Jul. 29, 2019  
Common Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Dividends declared per common share (in usd per share) $ 0.05            
Series A Preferred Stock [Member]              
Class of Stock [Line Items]              
Declaration Date       Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019 Mar. 19, 2019
Record Date       Jan. 10, 2020 Oct. 11, 2019 Jul. 12, 2019 Apr. 12, 2019
Payment Date       Jan. 27, 2020 Oct. 28, 2019 Jul. 29, 2019 Apr. 29, 2019
Dividends declared per preferred share (in usd per share)       $ 0.507810 $ 0.507810 $ 0.507810 $ 0.507810
Series A Preferred Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Declaration Date Apr. 06, 2020            
Record Date Apr. 16, 2020            
Payment Date Apr. 29, 2020            
Dividends declared per preferred share (in usd per share) $ 0.507810            
Series B Preferred Stock [Member]              
Class of Stock [Line Items]              
Declaration Date       Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019 Mar. 19, 2019
Record Date       Jan. 10, 2020 Oct. 11, 2019 Jul. 12, 2019 Apr. 12, 2019
Payment Date       Jan. 27, 2020 Oct. 28, 2019 Jul. 29, 2019 Apr. 29, 2019
Dividends declared per preferred share (in usd per share)       $ 0.476560 $ 0.476560 $ 0.476560 $ 0.476560
Series B Preferred Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Declaration Date Apr. 06, 2020            
Record Date Apr. 16, 2020            
Payment Date Apr. 29, 2020            
Dividends declared per preferred share (in usd per share) $ 0.476560            
Series C Preferred Stock [Member]              
Class of Stock [Line Items]              
Declaration Date       Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019 Mar. 19, 2019
Record Date       Jan. 10, 2020 Oct. 11, 2019 Jul. 12, 2019 Apr. 12, 2019
Payment Date       Jan. 27, 2020 Oct. 28, 2019 Jul. 29, 2019 Apr. 29, 2019
Dividends declared per preferred share (in usd per share)       $ 0.453130 $ 0.453130 $ 0.453130 $ 0.453130
Series C Preferred Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Declaration Date Apr. 06, 2020            
Record Date Apr. 16, 2020            
Payment Date Apr. 29, 2020            
Dividends declared per preferred share (in usd per share) $ 0.453130            
Series D Preferred Stock [Member]              
Class of Stock [Line Items]              
Declaration Date       Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019 Mar. 19, 2019
Record Date       Jan. 01, 2020 Oct. 01, 2019 Jul. 01, 2019 Apr. 01, 2019
Payment Date       Jan. 15, 2020 Oct. 15, 2019 Jul. 15, 2019 Apr. 15, 2019
Dividends declared per preferred share (in usd per share)       $ 0.484375 $ 0.484375 $ 0.484375 $ 0.484375
Series D Preferred Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Declaration Date Apr. 06, 2020            
Record Date Apr. 16, 2020            
Payment Date Apr. 29, 2020            
Dividends declared per preferred share (in usd per share) $ 0.484375            
Series E Preferred Stock [Member]              
Class of Stock [Line Items]              
Declaration Date       Dec. 17, 2019 Sep. 19, 2019 Jun. 19, 2019 Mar. 19, 2019
Record Date       Jan. 01, 2020 Oct. 01, 2019 Jul. 01, 2019 Apr. 01, 2019
Payment Date       Jan. 15, 2020 Oct. 15, 2019 Jul. 15, 2019 Apr. 15, 2019
Dividends declared per preferred share (in usd per share)       $ 0.468750 $ 0.468750 $ 0.468750 $ 0.468750
Series E Preferred Stock [Member] | Subsequent Event [Member]              
Class of Stock [Line Items]              
Declaration Date Apr. 06, 2020            
Record Date Apr. 16, 2020            
Payment Date Apr. 29, 2020            
Dividends declared per preferred share (in usd per share) $ 0.468750