v2.4.0.6

Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012 MMBTU MW		Dec. 31, 2011 MW MMBTU
Price Risk Derivatives [Abstract]
Power (MWh)	(13)		(21)
Natural gas (MMBtu)	2		(200)
Interest rate swaps	$ 1,629	[1]	$ 5,639	[1]
[1] Approximately $4.1 billion at December 31, 2011 was related to hedges of our First Lien Credit Facility's variable rate debt that was converted to fixed rate debt. On March 26, 2012, we terminated the interest rate swaps formerly hedging our First Lien Credit Facility.

X

- Definition

Nonmonetary Notional Amount of Price Risk Derivatives Natural Gas

+ References

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- Definition

Nonmonetary Notional Amount of Price Risk Derivatives Power

+ References

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- Definition

Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

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-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959



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-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6519104



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

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