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Accounting for Derivatives (Details 1) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives | $ 0 |
Cash Flow Hedging [Member] |  |
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives | (29,178) | (48,438)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss | (47,319) | (59,241)
Interest expense [Member] | Cash Flow Hedging [Member] |  |
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss | (47,729) | (55,771)
Fabrication revenue [Member] | Cash Flow Hedging [Member] |  |
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss | 410 | (3,470)
Interest rate hedges [Member] | Cash Flow Hedging [Member] |  |
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives | (29,178) | (44,558)
Foreign currency hedge [Member] | Cash Flow Hedging [Member] |  |
Derivatives designated as cash flow hedges: |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss) on Derivatives |  | $ (3,880)

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624177-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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