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Income Taxes Income Taxes (Tables)
 3 Months Ended
Mar. 31, 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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $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 March 31,
20222021
(In Millions)
Entergy$17 $41 
Entergy Arkansas$— $8 
Entergy Louisiana$9 $8 
Entergy New Orleans$1 $— 
Entergy Texas$7 $7 
System Energy$— $18