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Revenue and Accounts Receivable - Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | $ 1,484,009 | $ 1,012,786
Distribution |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | $ 1,439,693 | 971,636
Regulatory mechanism threshold (in percent) | 75.00% |
Pipeline and Storage |  |
Disaggregation of Revenue [Line Items] |  |
Total operating revenues | $ 44,316 | 41,150
Operating Segments | Distribution |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 1,458,203 | 920,943
Alternative revenue program revenues | (18,322) | 50,986
Other revenues | 545 | 493
Total operating revenues | 1,440,426 | 972,422
Operating Segments | Distribution | Gas sales revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 1,423,759 | 890,475
Operating Segments | Distribution | Gas sales revenues | Residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 953,051 | 575,841
Operating Segments | Distribution | Gas sales revenues | Commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 388,667 | 250,761
Operating Segments | Distribution | Gas sales revenues | Industrial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 59,215 | 48,681
Operating Segments | Distribution | Gas sales revenues | Public authority and other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 22,826 | 15,192
Operating Segments | Distribution | Transportation revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 32,162 | 27,869
Operating Segments | Distribution | Miscellaneous revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 2,282 | 2,599
Operating Segments | Pipeline and Storage |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 197,974 | 170,402
Alternative revenue program revenues | (11,345) | (7,484)
Other revenues | 0 | 0
Total operating revenues | 186,629 | 162,918
Operating Segments | Pipeline and Storage | Gas sales revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Operating Segments | Pipeline and Storage | Gas sales revenues | Residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Operating Segments | Pipeline and Storage | Gas sales revenues | Commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Operating Segments | Pipeline and Storage | Gas sales revenues | Industrial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Operating Segments | Pipeline and Storage | Gas sales revenues | Public authority and other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 0 | 0
Operating Segments | Pipeline and Storage | Transportation revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 195,252 | 163,859
Operating Segments | Pipeline and Storage | Miscellaneous revenues |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 2,722 | $ 6,543

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- Definition APT has a regulatory mechanism that requires that we share with its tariffed customers a set percentage, as determined through the rate case filings, of the difference between the total non-tariffed revenues earned during a test period and a revenue benchmark. + References No definition available. + Details
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