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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Recognizable events No recognizable events occurred subsequent to June 30, 2019. Non-recognizable events Cash Distribution. In July 2019, our general partner’s board of directors declared a quarterly cash distribution of $1.0125 per unit for the period of April 1, 2019 through June 30, 2019. This quarterly cash distribution will be paid on August 14, 2019 to unitholders of record on August 7, 2019. The total cash distributions expected to be paid under this declaration are approximately $231.3 million.