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Consolidated Statements of Capital (Parenthetical) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Statement Of Partners Capital [Abstract]        
Distributions per common unit $ 0.58 $ 0.53 $ 1.16 $ 1.06