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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes (Textual) [Abstract]
U.S. federal statutory rate			35.00%
Valuation Allowance, Deferred Tax Asset, Change in Amount			$ (50.9)
Effective Income Tax Rate, Continuing Operations	52.00%	109.00%	(231.00%)	10.00%
Semcrude Pipeline [Member]
Income Taxes (Textual) [Abstract]
Equity Method Investment, Ownership Percentage	33.00%		33.00%
Foreign Tax Authority [Member]
Income Taxes (Textual) [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 3.3