Related Party Transactions - Schedule of Combined Statement of Operations (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	[1]	Dec. 31, 2014	[2]	Dec. 31, 2013	[2]
Related Party Transactions [Abstract]
Operations and maintenance - related parties		$ 18.5		$ 21.7		$ 18.7
General and administrative - related parties	[3]	$ 24.6		$ 17.0		$ 13.9

[1] The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations from January 1, 2015 through September 30, 2015.

[2] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

[3] For 2015 and 2014, we incurred $7.4 million and $3.5 million, respectively, under the Management Agreement and $8.5 million and $1.4 million, respectively, under the Omnibus Agreement for general and administrative services.