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Commitments And Contingencies (Tables)
12 Months Ended
Dec. 31, 2023
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
Entergy Arkansas [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
Entergy Louisiana [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
Entergy Mississippi [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
Entergy New Orleans [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
Entergy Texas [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3
System Energy [Member]  
Schedule of Loss Contingencies by Contingency [Table Text Block] Effective April 1, 2023, the maximum amounts of such possible assessments per occurrence were as follows:
 Assessments
 (In Millions)
Utility: 
Entergy Arkansas$19.4
Entergy Louisiana$36.6
Entergy Mississippi$0.1
Entergy New Orleans$0.1
Entergy TexasN/A
System Energy$14.3