Other Assets (Schedule Of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Cost	$ 62,016	$ 29,990
Goodwill, Net	62,016	29,990
Other intangible assets, Net	11,716	3,230
Total intangible assets	219,249	101,920
Intangible assets, Accumulated Amortization	(60,203)	(53,628)
Intangible assets, net	159,046	48,292
Notes receivable from affiliate	1,025	1,192
Turnaround costs	107,732	83,726
Turnaround costs, Accumulated Amortization	(37,276)	(54,666)
Turnaround costs, Net	70,456	29,060
Debt issuance costs, Cost	19,220	19,219
Debt issuance costs, Accumulated Amortization	(9,608)	(8,149)
Debt issuance costs, Net	9,612	11,070
Other, Costs	31,288	27,736
Other, Accumulated Amortization	(14,489)	(10,351)
Other, Net	16,799	17,385
Other assets, Cost	378,514	233,793
Other assets, Accumulated Amortization	(121,576)	(126,794)
Other assets, net	(256,938)	(106,999)
Total Deferred Charges and Other Assets, Noncurrent, Gross	159,265	131,873
Accumulated Amortization, Total Deferred Charges and Other Assets	(61,373)	(73,166)
Total Deferred Charges and Other Assets, NonCurrent, Net	97,892	58,707
Turnaround Costs [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Weighted Average Life	5 years
Debt Issuance Costs [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Weighted Average Life	13 years
Other, Net [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Weighted Average Life	3 years
Technology Licenses [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, Cost	63,765	44,548
Intangible assets, Accumulated Amortization	(43,190)	(41,413)
Intangible assets, Net	20,575	3,135
Weighted Average Life	13 years
Patents [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, Cost	6,503	6,503
Intangible assets, Accumulated Amortization	(4,837)	(3,956)
Intangible assets, Net	1,666	2,547
Weighted Average Life	10 years
Customer Relationships [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, Cost	75,249	17,649
Intangible assets, Accumulated Amortization	(12,176)	(8,259)
Intangible assets, Net	$ 63,073	$ 9,390
Weighted Average Life	15 years