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Equity - Dividends (Details) - $ / shares
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Class of Stock [Line Items]    
Common stock, dividends (in dollars per share) $ 0.25 $ 0.25
Common units, dividends (in dollars per share) 0.25 0.25
Performance units, dividends (in dollars per share) 0.25 0.25
Series A preferred units    
Class of Stock [Line Items]    
Preferred units, dividends (in dollars per share) $ 0.3906 $ 0.3906