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Equity - Dividends (Details) - $ / shares
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Class of Stock [Line Items]        
Common stock, dividends (in dollars per share) $ 0.25 $ 0.25 $ 0.50 $ 0.50
Common Stock, dividends, cash paid (in dollars per share) 0.25 0.25 0.50 0.50
Common units, dividends (in dollars per share) 0.25 0.25 0.50 0.50
Common units, dividends, cash paid (in dollars per share) 0.25 0.25 0.50 0.50
Preferred units, dividends (in dollars per share)     0.7812 0.7812
Preferred stock, dividends, cash paid (in dollars per share) 0.3906 0.3906 0.7812 0.7812
Performance units, dividends, cash paid (in dollars per share) 0.25 0.25 0.50 0.50
Performance units, dividends (in dollars per share) 0.25 0.25 $ 0.50 $ 0.50
Series A preferred units        
Class of Stock [Line Items]        
Preferred units, dividends (in dollars per share) $ 0.3906 $ 0.3906