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Commitments and Contingencies (Policies) (Energy Segment [Member])	9 Months Ended
	Sep. 30, 2012
Energy Segment [Member]
Schedule of Significant Accounting Policies [Line Items]
Environmental Costs, Policy	Environmental expenditures are capitalized when such expenditures are expected to result in future economic benefits. For the three months ended September 30, 2012 and the period May 5, 2012 through September 30, 2012, capital expenditures were $8 million and $12 million, respectively, and were incurred to improve the environmental compliance and efficiency of the operations.

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.

+ References

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