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Percentage change between proposed and final federal rules governing generation asset annual nitrogen oxides emissions budgets.

+ References

No definition available.

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- Definition

Percentage change between proposed and final federal rules governing generation asset seasonal nitrogen oxides emissions budgets.

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No definition available.

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- Definition

Percentage change between proposed and final federal rules governing generation asset sulfur dioxide emissions budgets.

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No definition available.

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified								1 Months Ended
	Sep. 30, 2013 Texas Competitive Electric Holdings Company LLC [Member]	Sep. 30, 2013 Texas Competitive Electric Holdings Company LLC [Member] Debt obligation expiring in 2014 [Member]	Sep. 30, 2013 Financial Standby Letter of Credit [Member] Texas Competitive Electric Holdings Company LLC [Member]	Sep. 30, 2013 Financial Standby Letter of Credit [Member] Texas Competitive Electric Holdings Company LLC [Member] Support risk management and trading margin requirements, including over-the-counter hedging transactions and collateral postings with ERCOT [Member]	Sep. 30, 2013 Financial Standby Letter of Credit [Member] Texas Competitive Electric Holdings Company LLC [Member] Support floating rate pollution control revenue bond debt [Member]	Sep. 30, 2013 Financial Standby Letter of Credit [Member] Texas Competitive Electric Holdings Company LLC [Member] Support Retail Electric Provider's financial requirements with the PUCT [Member]	Sep. 30, 2013 Financial Standby Letter of Credit [Member] Texas Competitive Electric Holdings Company LLC [Member] Miscellaneous credit support requirements [Member]	Feb. 29, 2012 CSAPR [Member]
Commitments and Contingencies [Line Items]
Letters of Credit	$ 0		$ 776	$ 353	$ 208	$ 65	$ 150
Long-term debt, gross		$ 204
Emissions budget generation assets lower sulfur dioxide requirements (as a percent)								6.00%
Emissions budget generation assets higher annual nitrogen oxides requirements (as a percent)								3.00%
Emissions budget generation assets higher seasonal nitrogen oxides requirements (as a percent)								2.00%