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Risk Management and Fair Values (Narrative) (Details)
6 Months Ended
Jun. 30, 2022
USD ($)
MMBTU
GWh
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Maturity of cash flow hedges, Tax   $ 8,000,000  
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU 27,681,400    
Total volume of fixed transmission rights outstanding | GWh 135,179    
Debt Securities, Available-for-sale, Allowance for Credit Loss     $ 400,000
Letters Of Credit $ 3,000,000    
Entergy Arkansas [Member]      
Total volume of fixed transmission rights outstanding | GWh 30,477    
Entergy Louisiana [Member]      
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU 12,800,000    
Total volume of fixed transmission rights outstanding | GWh 61,242    
Entergy Mississippi [Member]      
Letters of Credit Outstanding, Amount $ 400,000   200,000
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU 14,771,300    
Total volume of fixed transmission rights outstanding | GWh 14,621    
Entergy New Orleans [Member]      
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU 110,100    
Total volume of fixed transmission rights outstanding | GWh 5,720    
Entergy Texas [Member]      
Letters of Credit Outstanding, Amount $ 5,300,000   100,000
Total volume of fixed transmission rights outstanding | GWh 22,950    
Gas Hedge Contracts [Member] | Entergy Louisiana [Member]      
Maximum Length of Time Hedged in Cash Flow Hedge 1 year 9 months    
Gas Hedge Contracts [Member] | Entergy Mississippi [Member]      
Maximum Length of Time Hedged in Cash Flow Hedge 6 months    
Gas Hedge Contracts [Member] | Entergy New Orleans [Member]      
Maximum Length of Time Hedged in Cash Flow Hedge 6 months    
Electricity Swaps And Options [Member] | Cash Flow Hedging [Member] | Competitive Businesses Operating Revenues [Member]      
Maturity of cash flow hedges, before taxes   $ 40,000,000  
Entergy Wholesale Commodities [Member]      
Cash collateral posted $ 12,000,000   $ 8,000,000
Utility [Member]      
Letters Of Credit $ 6,000,000