Risk Management and Fair Values Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 TWh	Dec. 31, 2021 USD ($) GWh MMBTU	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Risk Management and Fair Values [Abstract]
Included in earnings			$ (0.3)	$ (9.2)
Maturity of cash flow hedges, Tax		$ 8.0	31.0	$ 20.0
Debt Securities, Available-for-sale, Allowance for Credit Loss		0.4	0.1
Entergy Wholesale Commodities [Member]
Risk Management and Fair Values [Abstract]
Cash collateral posted		$ 8.0	5.0
Letters of Credit Held			39.0
Utility [Member]
Risk Management and Fair Values [Abstract]
Letters Of Credit			1.0
Power Contracts [Member]
Risk Management and Fair Values [Abstract]
Cash collateral posted			5.0
Letters of Credit Held			39.0
Gas Hedge Contracts [Member]
Risk Management and Fair Values [Abstract]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU		33,083,500
Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values [Abstract]
Total volume of FTRs outstanding (MWh) | GWh		57,836
Subsequent Event [Member] | Power Contracts [Member]
Risk Management and Fair Values [Abstract]
Planned generation sold forward from non utility nuclear power plants	99.00%
Total planned generation for remainder of the period | TWh	2.8
Entergy Arkansas [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values [Abstract]
Total volume of FTRs outstanding (MWh) | GWh		12,561
Entergy Louisiana [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values [Abstract]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU		16,420,000
Maximum Length of Time Hedged in Cash Flow Hedge		2 years 3 months
Entergy Louisiana [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values [Abstract]
Letters of Credit Outstanding, Amount			0.3
Total volume of FTRs outstanding (MWh) | GWh		25,973
Entergy Mississippi [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values [Abstract]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU		16,017,800
Maximum Length of Time Hedged in Cash Flow Hedge		10 months
Entergy Mississippi [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values [Abstract]
Letters of Credit Outstanding, Amount		$ 0.2	0.2
Total volume of FTRs outstanding (MWh) | GWh		6,429
Entergy New Orleans [Member] | Gas Hedge Contracts [Member]
Risk Management and Fair Values [Abstract]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU		645,700
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 [Abstract]
Letters of Credit Outstanding, Amount			0.2
Total volume of FTRs outstanding (MWh) | GWh		2,643
Entergy Texas [Member] | Financial Transmission Rights (FTRs) [Member]
Risk Management and Fair Values [Abstract]
Letters of Credit Outstanding, Amount		$ 0.1	$ 0.5
Total volume of FTRs outstanding (MWh) | GWh		10,003