Subsequent Event
3 Months Ended
Mar. 31, 2015
Subsequent Events [Abstract]  
Subsequent Event
Subsequent Event
Distribution. On April 29, 2015, the board of directors of MLP GP, the Partnership's general partner, declared an initial prorated quarterly cash distribution for the period February 11, 2015, through March 31, 2015, of $0.0912 per unit, or $9.2 million. This distribution is payable on May 20, 2015, to unit holders of record as of May 13, 2015.