Related Party Transactions (CCP) (Narrative) (Details) - Cross Country Pipeline [Member] - Immediate Family Member of Management or Principal Owner [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Cost Method Investment [Member]
Related Party Transaction [Line Items]
Cost method investment, original cost	$ 15.0		$ 15.0
Lease and Rental Agreements [Member] | Equipment [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 1.0	$ 1.8	$ 2.7	$ 2.7