Related Party Transactions (CCP) (Narrative) (Details) - Cross Country Pipeline Supply, Inc. [Member] - Immediate Family Member of Management or Principal Owner [Member] - Equipment [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 2.8	$ 1.0	$ 3.6	$ 2.7
Rebates received from related party			0.4
Accounts payable, related party	$ 3.8		$ 3.8		$ 0.6