Risk Management and Fair Values Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) GWh MMBTU	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)
Risk Management and Fair Values (Textual) [Abstract]
Derivative Instruments Gain Loss Reclassified From Accumulated O C I Into Income Effective Portion Tax		$ 8.0
Collateral Already Posted, Aggregate Fair Value			$ 8.0
Utility [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount	$ 2.0		3.0
Gas Hedge Contracts [Member]
Risk Management and Fair Values (Textual) [Abstract]
Volume Of Natural Gas Swaps Outstanding | MMBTU	14,798,500
Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Volume of Financial Transmission Rights Outstanding | GWh	62,809
Electricity Futures Forwards Swaps And Options [Member] | Cash Flow Hedging [Member]
Risk Management and Fair Values (Textual) [Abstract]
Unrealized Gain (Loss) on Derivatives		$ 2.0
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]		Revenue from Contract with Customer, Excluding Assessed Tax
Entergy Arkansas [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount	$ 1.2
Volume of Financial Transmission Rights Outstanding | GWh	15,385
Entergy Louisiana [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values (Textual) [Abstract]
Volume Of Natural Gas Swaps Outstanding | MMBTU	1,820,000
Maximum Length of Time Hedged in Cash Flow Hedge	3 months
Entergy Louisiana [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount	$ 0.5
Volume of Financial Transmission Rights Outstanding | GWh	26,990
Entergy Mississippi [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values (Textual) [Abstract]
Volume Of Natural Gas Swaps Outstanding | MMBTU	12,491,700
Maximum Length of Time Hedged in Cash Flow Hedge	10 months
Entergy Mississippi [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount	$ 0.3		0.2
Volume of Financial Transmission Rights Outstanding | GWh	8,250
Entergy New Orleans [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values (Textual) [Abstract]
Volume Of Natural Gas Swaps Outstanding | MMBTU	486,800
Maximum Length of Time Hedged in Cash Flow Hedge	3 months
Entergy New Orleans [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount			0.2
Volume of Financial Transmission Rights Outstanding | GWh	2,478
Entergy Texas [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values (Textual) [Abstract]
Letters of Credit Outstanding, Amount	$ 0.1		$ 2.4
Volume of Financial Transmission Rights Outstanding | GWh	9,611