Commitments and Contingencies (Policies) (Energy Segment [Member])	6 Months Ended
Jun. 30, 2013
Energy Segment [Member]
Schedule of Significant Accounting Policies [Line Items]
Environmental Costs, Policy [Policy Text Block]	Environmental expenditures are capitalized when such expenditures are expected to result in future economic benefits.

- Definition

Disclosure of accounting policy for obligations that resulted from improper or other-than normal operation of a long-lived asset in the past. This accounting policy may address (1) whether the related remediation costs are expensed or capitalized, (2) whether the obligation is measured on a discounted basis, (3) the event, situation, or set of circumstances that generally triggers recognition of loss contingencies arising from the entity's environmental remediation-related obligations, and (4) the timing of recognition of any recoveries.

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