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Regulatory and Rate Matters - TNMP Narrative (Details) - TNMP - USD ($)
$ in Millions
Sep. 28, 2023
Aug. 24, 2022
May 27, 2022
Mar. 01, 2022
Public Utilities, Commitments And Contingencies [Line Items]        
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 $ 1.2 $ 1.9    
Energy efficiency cost recovery factor, recovery $ 6.6