Subsequent Event
3 Months Ended
Mar. 31, 2016
Subsequent Events [Abstract]  
Subsequent Event
Subsequent Event
Distribution. On May 2, 2016, the board of directors of MLP GP, the Partnership's general partner, declared a quarterly cash distribution for the period January 1, 2016, through March 31, 2016, of $0.1875 per unit, or $18.9 million in total. This distribution is payable on May 20, 2016, to unitholders of record as of May 13, 2016.