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Legal Contingencies [Abstract]

No definition available.

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Litigation Settlement, Annual Installment

No definition available.

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Litigation Settlement Installment Period

No definition available.

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Litigation Settlement, Payable upon Final Approval of Settlement

No definition available.

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Litigation Settlement Period

No definition available.

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The number of labor unions representing a group of employees.

No definition available.

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Pursuant to the terms of the settlement agreement with the Pension Benefit Guaranty Corporation, this amount represents the remaining additional contributions (above any minimum required contributions) to our defined benefit pension plans.

No definition available.

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Pursuant to the terms of the settlement agreement with the Pension Benefit Guaranty Corporation, we will make additional contributions (above any minimum required contributions) to our defined benefit pension plans.

No definition available.

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The percentage of a Company's work force, based in the country of domicile, that are subject to collective bargaining agreements.

No definition available.

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The percentage of a Company's Icelandic work force that are subject to collective bargaining agreements.

No definition available.

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The percentage of a Company's work force that are subject to collective bargaining agreements.

No definition available.

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The percentage of a Company's Netherlands work force that are subject to collective bargaining agreements

No definition available.

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The power currently available under the power purchase agreement.

No definition available.

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Power Supply Agreement, Termination Notice Period

No definition available.

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Short-term Power Agreement, Supply from Source One, Percentage

No definition available.

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Short-term Power Agreement, Supply from Source Two, Percentage

No definition available.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859

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- References

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Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

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The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

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