Commitments And Contingencies (Maximum Amounts Of Possible Assessments Per Occurrence) (Details) - Insurance-related Assessments [Member] - Subsequent Event [Member] $ in Thousands	Jan. 01, 2023 USD ($)
Entergy Arkansas [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 19,200
Entergy Louisiana [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	36,100
Entergy Mississippi [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	100
Entergy New Orleans [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	100
System Energy [Member]
Commitments And Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 14,600