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Income Taxes Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2022
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18 
Entergy Arkansas [Member]  
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18 
Entergy Louisiana [Member]  
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18 
Entergy New Orleans [Member]  
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18 
Entergy Texas [Member]  
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18 
System Energy [Member]  
Reduction to Regulatory Liability Due to Return of Unprotected Excess ADIT [Table Text Block] The return of unprotected excess accumulated deferred income taxes reduced Entergy’s and the Registrant Subsidiaries’ regulatory liability for income taxes as follows:
Three Months
Ended September 30,		Nine Months
Ended September 30,
2022202120222021
(In Millions)
Entergy$16 $17 $50 $72 
Entergy Arkansas$— $— $— $8 
Entergy Louisiana$6 $8 $25 $24 
Entergy New Orleans$— $— $1 $— 
Entergy Texas$10 $9 $24 $22 
System Energy$— $— $— $18