Reorganization Items (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Feb. 01, 2010 Revaluation of Liabilities
Reorganization Items [Abstract]
Write-off of remaining unamortized debt fair value adjustment	$ 0		$ 32
Professional fees	0		5
Total reorganization items (less than $1 million for three months ended September 30, 2013)	0	0	37	0
Fresh start accounting discount recognized					$ 120

Fresh-Start Adjustment, Increase (Decrease), Long-term Debt and Short-term Debt, Total

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- Definition

Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 55

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=29642632&loc=d3e56145-112766

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 45

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=6916575&loc=d3e55730-112764

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- Definition

Amount of write-off of deferred financing costs and debt discounts related to prepetition debt obligations.

+ References

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- Definition

Total amount of reorganization items.

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