Income Taxes (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes
Income tax benefit	$ 17,000,000	$ 41,184,000	$ 132,799,000	$ 27,972,000
Benefit attributable to foreign currency exchange rate fluctuations on foreign deferred tax liabilities			11,200,000
One-time non-cash deferred income tax charge reflecting the revaluation of Canadian and U.K. Operations deferred tax liabilities as a result of change in the statutory corporate tax rates	13,700,000		13,700,000
One-time non-cash deferred income tax charge related to intercompany lending between the Company's West Virginia and U.K. operations	$ 10,300,000		$ 10,300,000

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense or benefit. The foreign income tax expense or benefit difference represents the income tax expense or benefit at applicable domestic statutory income tax rates applied to foreign earnings or loss for the period versus the foreign income tax expense or benefit calculated by applying the appropriate foreign tax rates.

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