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Regulatory and Rate Matters - TNMP Narrative (Details) - TNMP $ in Millions	Jul. 30, 2024 USD ($)	Jul. 25, 2024 USD ($)	Jul. 08, 2024 customer	Sep. 28, 2023 USD ($)	May 31, 2024 USD ($)	Mar. 01, 2022 USD ($)
Public Utilities, Commitments And Contingencies [Line Items]
Energy efficiency cost recovery, requested change amount						$ 7.3
Energy efficiency cost recovery, requested bonus					$ 7.0	$ 1.9
Energy efficiency cost recovery factor, recovery				$ 6.6
Energy efficiency cost recovery factor, approved performance bonus				$ 1.2	$ 1.3
Subsequent Event
Public Utilities, Commitments And Contingencies [Line Items]
Requested increase annual distribution revenue requirement		$ 20.6
Incremental distribution investments		$ 3.9
Requested rate increase (decrease)	$ 7.8
Recovery of base rate	$ 43.7
Subsequent Event | Hurricane
Public Utilities, Commitments And Contingencies [Line Items]
Number of customers without power | customer			116,000

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- Definition

Energy Efficiency Cost Recovery Factor, Approved Performance Bonus

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Energy Efficiency Cost Recovery Factor, Recovery

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Energy Efficiency Cost Recovery Factor, Requested Change Amount

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Energy Efficiency Cost Recovery Factor, Requested Performance Bonus

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- Definition

Number Of Customers Without Power Due To Natural Disaster

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Public Utilities, Incremental Distribution Investments

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- Definition

Public Utilities, Recovery Of Base Rate

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Public Utilities, Requested Increase Annual Distribution Revenue Requirement

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- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

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