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Income Taxes Income Taxes (Tables) | 6 Months Ended
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Jun. 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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
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 June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In Millions)
Entergy | $16 |  |  | $14 |  |  | $33 |  |  | $54 |
Entergy Arkansas | $— |  |  | $— |  |  | $— |  |  | $8 |
Entergy Louisiana | $9 |  |  | $8 |  |  | $18 |  |  | $15 |
Entergy New Orleans | $— |  |  | $— |  |  | $1 |  |  | $— |
Entergy Texas | $7 |  |  | $6 |  |  | $14 |  |  | $13 |
System Energy | $— |  |  | $— |  |  | $— |  |  | $18 |

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