Intangible Assets, Goodwill And Other Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Intangible Assets, Goodwill And Other Assets [Line Items]
Amortization expense on intangible assets	$ 19,900,000	$ 30,900,000	$ 26,800,000
Goodwill	325,046,000	325,046,000
Impairment of goodwill	0	0	0
Amortization on CO2 assets	3,800,000	3,700,000	4,300,000
Refinery Services [Member]
Intangible Assets, Goodwill And Other Assets [Line Items]
Goodwill	301,900,000	301,900,000
Supply And Logistics [Member]
Intangible Assets, Goodwill And Other Assets [Line Items]
Decrease in income during current year due to change in useful life		7,700,000
Decrease in income during current year due to change in useful life per common unit		(0.11)
Goodwill	$ 23,100,000	$ 23,100,000