Risk Management and Fair Values (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) GWh MMBTU	Dec. 31, 2022 USD ($)
Total volume of fixed transmission rights outstanding | GWh	24,016
Letters Of Credit	$ 3.0
Entergy Arkansas [Member]
Letters of Credit Outstanding, Amount	$ 0.1
Total volume of fixed transmission rights outstanding | GWh	5,351
Entergy Louisiana [Member]
Total volume of fixed transmission rights outstanding | GWh	11,049
Entergy Mississippi [Member]
Letters of Credit Outstanding, Amount	$ 0.3	$ 0.2
Total volume of fixed transmission rights outstanding | GWh	2,592
Entergy New Orleans [Member]
Letters of Credit Outstanding, Amount		0.2
Total volume of fixed transmission rights outstanding | GWh	1,054
Entergy Texas [Member]
Letters of Credit Outstanding, Amount	$ 0.5	2.4
Total volume of fixed transmission rights outstanding | GWh	3,939
Gas Hedge Contracts [Member]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	28,141,800
Gas Hedge Contracts [Member] | Entergy Louisiana [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	1 year
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	7,320,000
Gas Hedge Contracts [Member] | Entergy Mississippi [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	1 year
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	20,821,800
Entergy Wholesale Commodities [Member]
Cash collateral posted		8.0
Utility [Member]
Letters Of Credit	$ 1.0	$ 3.0