Risk Management and Fair Values (Fair Values Of Derivative Instruments) (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Entergy Wholesale Commodities [Member]
Derivatives, Fair Value [Line Items]
Cash collateral posted	$ 8,000,000	$ 8,000,000
Other Deferred Debits And Other Assets [Member] | Natural Gas Swaps [Member] | Utility [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	8,000,000	5,000,000
Derivative Asset, Fair Value, Gross Asset	8,000,000	5,000,000
Derivative, Collateral, Obligation to Return Cash		0
Prepayments And Other [Member] | Natural Gas Swaps [Member] | Utility [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	22,000,000	6,000,000
Derivative Asset, Fair Value, Gross Asset	22,000,000	6,000,000
Derivative, Collateral, Obligation to Return Cash	0	0
Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Utility and Entergy Wholesale Commodities [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	21,000,000	4,000,000
Derivative Asset, Fair Value, Gross Asset	23,000,000	4,000,000
Derivative, Collateral, Obligation to Return Cash	(2,000,000)	0
Other Current Liabilities [Member] | Natural Gas Swaps [Member] | Utility [Member] | Not Designated As Hedging Instrument [Member]
Liabilities:
Derivative Liability, Fair Value, Gross Liability		7,000,000
Derivative, Collateral, Right to Reclaim Cash		0
Derivative Liability		7,000,000
Entergy Louisiana [Member]
Liabilities:
Letters of Credit Outstanding, Amount	900,000
Entergy Louisiana [Member] | Other Deferred Debits And Other Assets [Member] | Natural Gas Swaps [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	8,000,000.0	5,300,000
Derivative Asset, Fair Value, Gross Asset	8,000,000.0	5,300,000
Derivative, Collateral, Obligation to Return Cash	0	0
Entergy Louisiana [Member] | Prepayments And Other [Member] | Natural Gas Swaps [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	20,100,000	5,700,000
Derivative Asset, Fair Value, Gross Asset	20,100,000	5,700,000
Derivative, Collateral, Obligation to Return Cash	0	0
Entergy Louisiana [Member] | Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	9,400,000	600,000
Derivative Asset, Fair Value, Gross Asset	10,000,000.0	600,000
Derivative, Collateral, Obligation to Return Cash	600,000	0
Entergy Mississippi [Member]
Liabilities:
Letters of Credit Outstanding, Amount	800,000	200,000
Entergy Mississippi [Member] | Prepayments And Other [Member] | Natural Gas Swaps [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	2,000,000.0
Derivative Asset, Fair Value, Gross Asset	2,000,000.0
Derivative, Collateral, Obligation to Return Cash	0
Entergy Mississippi [Member] | Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	1,500,000	300,000
Derivative Asset, Fair Value, Gross Asset	1,500,000	300,000
Derivative, Collateral, Obligation to Return Cash	0	0
Entergy Mississippi [Member] | Other Current Liabilities [Member] | Natural Gas Swaps [Member] | Not Designated As Hedging Instrument [Member]
Liabilities:
Derivative Liability, Fair Value, Gross Liability		6,700,000
Derivative, Collateral, Right to Reclaim Cash		0
Derivative Liability		6,700,000
Entergy New Orleans [Member]
Liabilities:
Letters of Credit Outstanding, Amount	100,000
Entergy New Orleans [Member] | Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	1,100,000	100,000
Derivative Asset, Fair Value, Gross Asset	1,100,000	100,000
Derivative, Collateral, Obligation to Return Cash	0	0
Entergy New Orleans [Member] | Other Current Liabilities [Member] | Natural Gas Swaps [Member] | Not Designated As Hedging Instrument [Member]
Liabilities:
Derivative Liability, Fair Value, Gross Liability	400,000	500,000
Derivative, Collateral, Right to Reclaim Cash	0	0
Derivative Liability	400,000	500,000
Entergy Arkansas [Member] | Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset	9,600,000	2,300,000
Derivative Asset, Fair Value, Gross Asset	9,600,000	2,300,000
Derivative, Collateral, Obligation to Return Cash	0	0
Entergy Texas [Member]
Liabilities:
Derivative Liability	400,000
Letters of Credit Outstanding, Amount	800,000	100,000
Entergy Texas [Member] | Prepayments And Other [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Assets:
Derivative Asset		800,000
Derivative Asset, Fair Value, Gross Asset		800,000
Derivative, Collateral, Obligation to Return Cash		$ 0
Entergy Texas [Member] | Other Current Liabilities [Member] | Fixed Transmission Rights (FTRs) [Member] | Not Designated As Hedging Instrument [Member]
Liabilities:
Derivative Liability, Fair Value, Gross Liability	900,000
Derivative, Collateral, Right to Reclaim Cash	(1,300,000)
Derivative Liability	$ (400,000)