RECENT INVESTMENT ACTIVITY (DETAILS) (USD $) In Millions, unless otherwise specified	1 Months Ended	9 Months Ended
Feb. 28, 2013	Sep. 30, 2012 Willmut Gas [Member]	May 20, 2012 Willmut Gas [Member]
Property, plant and equipment
Total liabilities			$ (10)
Pro forma revenues		7
Cash consideration (fair value of total consideration)			19
Acquired percentage interest in joint venture			100.00%
Proceeds from sale of Mesquite Power plant	371
Gain on sale of Mesquite Power plant	74
Gain on sale of Mesquite Power plant, after tax	$ 44

The amount of total liabilities recognized as of the acquisition date.

No definition available.

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- Definition

Gain on sale of Mesquite Power plant, after tax.

+ References

No definition available.

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- Definition

Amount of cash paid to acquire the entity.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

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-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

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-Paragraph 2

-Subparagraph (c)

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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- Definition

The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).

+ References

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

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-Glossary Investing Activities

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