Risk Management and Fair Values (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) GWh MMBTU	Dec. 31, 2022 USD ($)
Total volume of fixed transmission rights outstanding | GWh	100,632
Letters Of Credit	$ 3.0
Entergy Arkansas [Member]
Letters of Credit Outstanding, Amount	$ 1.7
Total volume of fixed transmission rights outstanding | GWh	25,018
Entergy Louisiana [Member]
Letters of Credit Outstanding, Amount	$ 0.9
Total volume of fixed transmission rights outstanding | GWh	42,908
Entergy Mississippi [Member]
Letters of Credit Outstanding, Amount	$ 0.6	$ 0.2
Total volume of fixed transmission rights outstanding | GWh	12,949
Entergy New Orleans [Member]
Letters of Credit Outstanding, Amount		0.2
Total volume of fixed transmission rights outstanding | GWh	3,960
Entergy Texas [Member]
Letters of Credit Outstanding, Amount	$ 0.5	2.4
Total volume of fixed transmission rights outstanding | GWh	15,596
Gas Hedge Contracts [Member]
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	16,033,600
Gas Hedge Contracts [Member] | Entergy Louisiana [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	6 months
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	3,660,000
Gas Hedge Contracts [Member] | Entergy Mississippi [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	6 months
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	11,256,600
Gas Hedge Contracts [Member] | Entergy New Orleans [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	6 months
Total volume of natural gas swaps outstanding (MMBtu) | MMBTU	1,117,000
Entergy Wholesale Commodities [Member]
Cash collateral posted		8.0
Utility [Member]
Letters Of Credit	$ 4.0	$ 3.0