Intangible Assets, Goodwill And Other Assets (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets, Goodwill And Other Assets [Line Items]
Amortization expense on intangible assets	$ 14,560,000	$ 19,930,000	$ 30,900,000
Goodwill	325,046,000	325,046,000
Impairment of goodwill	0	0
Amortization on CO2 assets	3,900,000	3,800,000	3,700,000
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]
Goodwill	$ 23,100,000	$ 23,100,000