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Revenue Recognition (Allowance for Doubtful Accounts) (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | $ 25.6 | $ 109.1 | $ 68.6 | $ 117.7
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 11.0 | 25.9 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (75.5) | (39.5) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 21.5 | 5.0 |  |
Incremental bad debt expenses resulting from the COVID-19 pandemic deferred as regulatory assets | (8.9) | 8.7 |  |
Entergy Arkansas [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | 6.2 | 22.4 | 13.1 | 18.3
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 8.2 | 5.5 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (21.8) | (2.8) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 6.7 | 1.4 |  |
Incremental bad debt expenses resulting from the COVID-19 pandemic deferred as regulatory assets | 3.9 | 0.8 |  |
Entergy Louisiana [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | 7.7 | 39.8 | 29.2 | 45.7
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 0.4 | 11.7 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (29.8) | (19.5) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 7.9 | 1.9 |  |
Incremental bad debt expenses resulting from the COVID-19 pandemic deferred as regulatory assets | (8.5) | 5.9 |  |
Entergy Mississippi [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | 2.2 | 13.6 | 7.2 | 19.5
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 0.2 | 1.7 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (7.4) | (8.8) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 2.2 | 1.2 |  |
Entergy New Orleans [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | 6.9 | 21.1 | 13.3 | 17.4
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 0.9 | 4.6 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (10.4) | (1.1) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 3.1 | 0.2 |  |
Incremental bad debt expenses resulting from the COVID-19 pandemic deferred as regulatory assets | (3.0) | 0.7 |  |
Entergy Texas [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Allowance for Doubtful Other Receivables, Current | 2.6 | 12.2 | $ 5.8 | $ 16.8
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 1.3 | 2.4 |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | (6.1) | (7.3) |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 1.6 | 0.3 |  |
Incremental bad debt expenses resulting from the COVID-19 pandemic deferred as regulatory assets | $ (1.3) | $ 1.3 |  |

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