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Regulatory and Rate Matters - TNMP Narrative (Details) - TNMP - USD ($) $ in Millions | Apr. 20, 2023 | Apr. 05, 2023 | Jan. 23, 2023 | Sep. 24, 2022 | May 27, 2022 | Mar. 01, 2022
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Public Utilities, Commitments And Contingencies [Line Items] |  |  |  |  |  |
Requested increase in annual distribution revenue |  |  | $ 19.4 |  |  |
Incremental distribution investments |  |  | $ 150.5 |  |  |
Energy efficiency cost recovery, requested change amount |  |  |  |  | $ 1.9 | $ 7.2
Energy efficiency cost recovery, requested bonus |  |  |  |  | $ 7.4 | $ 2.3
Energy efficiency cost recovery factor, approved settlement amount |  |  |  | $ 7.3 |  |
Energy efficiency cost recovery factor, approved performance bonus |  |  |  | $ 1.9 |  |
Subsequent event |  |  |  |  |  |
Public Utilities, Commitments And Contingencies [Line Items] |  |  |  |  |  |
Requested increase in annual distribution revenue |  | $ 14.8 |  |  |  |
Incremental distribution investments | $ 157.0 |  |  |  |  |

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- Details
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- Details
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