Risk Management and Fair Values (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) GWh MMBTU	Dec. 31, 2023 USD ($)
Letters of Credit Outstanding, Amount | $	$ 2.0	$ 2.0
Gas Hedge Contracts [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	7 months
Volume Of Natural Gas Swaps Outstanding | MMBTU	15,113,600
Gas Hedge Contracts [Member] | Entergy Mississippi [Member]
Maximum Length of Time Hedged in Cash Flow Hedge	7 months
Volume Of Natural Gas Swaps Outstanding | MMBTU	15,113,600
Financial Transmission Rights (FTRs) [Member]
Volume of Financial Transmission Rights Outstanding	25,095
Financial Transmission Rights (FTRs) [Member] | Entergy Arkansas [Member]
Letters of Credit Outstanding, Amount | $		1.2
Volume of Financial Transmission Rights Outstanding	6,056
Financial Transmission Rights (FTRs) [Member] | Entergy Louisiana [Member]
Letters of Credit Outstanding, Amount | $		0.5
Volume of Financial Transmission Rights Outstanding	10,928
Financial Transmission Rights (FTRs) [Member] | Entergy Mississippi [Member]
Letters of Credit Outstanding, Amount | $		0.3
Volume of Financial Transmission Rights Outstanding	3,294
Financial Transmission Rights (FTRs) [Member] | Entergy New Orleans [Member]
Volume of Financial Transmission Rights Outstanding	1,002
Financial Transmission Rights (FTRs) [Member] | Entergy Texas [Member]
Letters of Credit Outstanding, Amount | $		$ 0.1
Volume of Financial Transmission Rights Outstanding	3,772