Derivative asset designated as hedging instrument offset.

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- Definition

Derivative asset not designated as hedging instrument offset.

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- Definition

Derivative instruments not designated as hedging instruments gain loss recognized in other comprehensive income effective portion, net.

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- Definition

Derivative liability designated as hedging instrument offset.

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- Definition

Derivative liability not designated as hedging instrument offset.

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- Definition

Fair value assets measured on recurring basis.

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- Definition

Fair Value, Assets Measured on Recurring Basis Temporary cash investments.

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- Definition

Fair Value Liabilities Measured On Recurring Basis.

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- Definition

Fair value measurement with unobservable inputs reconciliation recurring basis asset originated.

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- Definition

For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading. Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 16

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 22

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 14

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- Definition

Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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- Definition

Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

+ Details

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- Definition

The income statement location of the effective portion of net gain or loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

+ Details

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- Definition

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References

+ Details

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

+ Details

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Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

+ Details

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- Definition

Fair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

+ Details

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(1)

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- Definition

This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets measured at fair value on a recurring basis using unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c(2)

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c

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Risk Management and Fair Values (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain reclassified from accumulated OCI into income (effective portion)	$ 32	$ 67	$ 61	$ 103
Amount of gain (loss) recognized in OCI (de-designated hedges)		3
Assets:[Line Items]
Temporary cash investments	435		435		1,218
Assets other than temporary cash investments	3,775.0		3,775.0		3,596.0
Total	4,692		4,692		5,400
Liabilities:[Line Items]
Total	19		19		19
Reconciliation of changes in the assets (liabilities) for the fair value of derivatives classified as Level 3 in the fair value hierarchy
Balance as of Beginning of period	104	432	197	200
Unrealized gains (losses) from price changes	9	(68)	(53)	193
Unrealized gains/(losses) on originations	17		15	7
Realized losses on settlements	(32)	(67)	(61)	(103)
Balance as of June 30	98	297	98	297
Entergy Wholesale Commodities [Member] \| Other non-current liabilities [Member] \| Electricity futures, forwards, swaps and options [Member]
Fair values of derivative instruments
Derivatives designated as hedging instruments	47		47		47
Derivatives not designated as hedging instruments	4		4		7
Derivative liability designated as hedging instrument offset	(30)		(30)		(30)
Derivative liability not designated as hedging instrument offset	(4)		(4)		(7)
Entergy Wholesale Commodities [Member] \| Other deferred debits and other assets [Member] \| Electricity futures, forwards, swaps and options [Member]
Fair values of derivative instruments
Derivatives designated as hedging instruments	41		41		82
Derivatives not designated as hedging instruments	5		5		14
Derivative asset designated as hedging instrument offset	(30)		(30)		(29)
Derivative asset not designated as hedging instrument offset	(5)		(5)		(8)
Utility [Member] \| Prepayments and other [Member] \| Natural gas swaps [Member]
Fair values of derivative instruments
Derivatives not designated as hedging instruments	2		2
Derivative liability not designated as hedging instrument offset	0		0
Entergy Wholesale Commodities [Member] \| Prepayments and other [Member] \| Electricity futures, forwards, swaps and options [Member]
Fair values of derivative instruments
Derivatives designated as hedging instruments	120		120		160
Derivatives not designated as hedging instruments	15		15		2
Derivative asset designated as hedging instrument offset	(19)		(19)		(7)
Derivative asset not designated as hedging instrument offset	(11)		(11)		0
Utility [Member] \| Other current liabilities [Member] \| Natural gas swaps [Member]
Fair values of derivative instruments
Derivatives not designated as hedging instruments					2
Derivative liability not designated as hedging instrument offset					0
Entergy Wholesale Commodities [Member] \| Other current liabilities [Member] \| Electricity futures, forwards, swaps and options [Member]
Fair values of derivative instruments
Derivatives designated as hedging instruments	24		24		5
Derivatives not designated as hedging instruments	7		7		2
Derivative liability designated as hedging instrument offset	(23)		(23)		(5)
Derivative liability not designated as hedging instrument offset	(7)		(7)		(2)
Level 1 [Member] \| Gas hedge contracts [Member]
Liabilities:[Line Items]
Total	0		0		2
Level 2 [Member] \| Gas hedge contracts [Member]
Liabilities:[Line Items]
Total	0		0		0
Level 3 [Member] \| Gas hedge contracts [Member]
Liabilities:[Line Items]
Total	18		18		0
Gas hedge contracts [Member]
Liabilities:[Line Items]
Total	18		18		2
Competitive businesses operating revenues [Member] \| Amount of gain (loss) recognized in OCI [Member]
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain (loss) recorded in income	4		6
Amount of gain (loss) recognized in OCI [Member]
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain (loss) recognized in OCI (de-designated hedges)	(4)		6	3
Electricity futures, forwards, swaps and options [Member]
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain (loss) recognized in OCI (effective portion)	19	(71)	(54)	197
Fuel, fuel related expenses and gas purchased for resale [Member] \| Natural gas swaps [Member]
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain (loss) recorded in income	(9)	22	(12)	(63)
Competitive businesses operating revenues [Member]
Derivative instruments not designated as cash flow hedges on consolidated statements of income
Amount of gain reclassified from accumulated OCI into income (effective portion)	32	67	61	103
Level 1 [Member]
Assets:[Line Items]
Temporary cash investments	435		435		1,218
Total	1,783		1,783		2,474
Level 1 [Member] \| Equity securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	401.0		401.0		387.0
Level 1 [Member] \| Debt Securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	581.0		581.0		497.0
Level 1 [Member] \| Power contracts [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 1 [Member] \| Securitization recovery trust account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	34.0		34.0		43.0
Level 1 [Member] \| Storm reserve escrow account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	332.0		332.0		329.0
Level 1 [Member]
Liabilities:[Line Items]
Total	1		1		2
Level 1 [Member] \| Power contracts [Member]
Liabilities:[Line Items]
Total	1		1		0
Level 2 [Member]
Assets:[Line Items]
Temporary cash investments	0		0		0
Total	2,793		2,793		2,712
Level 2 [Member] \| Equity securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	1,803.0		1,803.0		1,689.0
Level 2 [Member] \| Debt Securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	990.0		990.0		1,023.0
Level 2 [Member] \| Power contracts [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 2 [Member] \| Securitization recovery trust account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 2 [Member] \| Storm reserve escrow account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 2 [Member]
Liabilities:[Line Items]
Total	0		0		0
Level 2 [Member] \| Power contracts [Member]
Liabilities:[Line Items]
Total	0		0		0
Level 3 [Member]
Assets:[Line Items]
Temporary cash investments	0		0		0
Total	116		116		214
Level 3 [Member] \| Equity securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 3 [Member] \| Debt Securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 3 [Member] \| Power contracts [Member]
Assets:[Line Items]
Assets other than temporary cash investments	116.0		116.0		214.0
Level 3 [Member] \| Securitization recovery trust account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 3 [Member] \| Storm reserve escrow account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	0		0		0
Level 3 [Member]
Liabilities:[Line Items]
Total	18		18		17
Level 3 [Member] \| Power contracts [Member]
Liabilities:[Line Items]
Total	0		0		17
Equity securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	2,204.0		2,204.0		2,076.0
Debt Securities [Member]
Assets:[Line Items]
Assets other than temporary cash investments	1,571.0		1,571.0		1,520.0
Power contracts [Member]
Liabilities:[Line Items]
Total	1		1		17
Power contracts [Member]
Assets:[Line Items]
Assets other than temporary cash investments	116.0		116.0		214.0
Securitization recovery trust account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	34.0		34.0		43.0
Storm reserve escrow account [Member]
Assets:[Line Items]
Assets other than temporary cash investments	$ 332.0		$ 332.0		$ 329.0