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v3.22.4

Segment Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) state | Dec. 31, 2021 USD ($) | Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of states with service areas | state | 8 |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | $ 1,484,009 | $ 1,012,786 |
Purchased gas cost | 738,249 | 371,163 |
Operation and maintenance expense | 185,016 | 159,110 |
Depreciation and amortization expense | 146,020 | 127,856 |
Taxes, other than income | 93,538 | 78,796 |
Operating income | 321,186 | 275,861 |
Other non-operating income | 21,191 | 8,702 |
Interest charges | 36,760 | 19,851 |
Income before income taxes | 305,617 | 264,712 |
Income tax expense | 33,757 | 15,503 |
Net income | 271,860 | 249,209 |
Capital expenditures | 795,660 | 684,180 |
Segment Reporting Information, Balance Sheet [Abstract] |  |  |
Net property, plant and equipment | 17,971,668 |  | $ 17,240,239
Total assets | 23,366,161 |  | 22,192,989
Distribution |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 1,439,693 | 971,636 |
Pipeline and Storage |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 44,316 | 41,150 |
Eliminations |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | (143,046) | (122,554) |
Purchased gas cost | (142,808) | (122,225) |
Operation and maintenance expense | (238) | (329) |
Depreciation and amortization expense | 0 | 0 |
Taxes, other than income | 0 | 0 |
Operating income | 0 | 0 |
Other non-operating income | 0 | 0 |
Interest charges | 0 | 0 |
Income before income taxes | 0 | 0 |
Income tax expense | 0 | 0 |
Net income | 0 | 0 |
Capital expenditures | 0 | 0 |
Segment Reporting Information, Balance Sheet [Abstract] |  |  |
Net property, plant and equipment | 0 |  | 0
Total assets | (4,343,036) |  | (4,028,803)
Eliminations | Distribution |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 733 | 786 |
Eliminations | Pipeline and Storage |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 142,313 | 121,768 |
Operating Segments | Distribution |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 1,440,426 | 972,422 |
Purchased gas cost | 881,915 | 496,799 |
Operation and maintenance expense | 136,469 | 123,284 |
Depreciation and amortization expense | 105,664 | 92,797 |
Taxes, other than income | 84,622 | 69,045 |
Operating income | 231,756 | 190,497 |
Other non-operating income | 6,774 | 1,916 |
Interest charges | 22,839 | 8,548 |
Income before income taxes | 215,691 | 183,865 |
Income tax expense | 21,223 | 4,294 |
Net income | 194,468 | 179,571 |
Capital expenditures | 443,544 | 437,382 |
Segment Reporting Information, Balance Sheet [Abstract] |  |  |
Net property, plant and equipment | 13,155,891 |  | 12,723,532
Total assets | 22,595,795 |  | 21,424,586
Operating Segments | Pipeline and Storage |  |  |
Segment Reporting Information Profit Loss [Abstract] |  |  |
Operating revenues | 186,629 | 162,918 |
Purchased gas cost | (858) | (3,411) |
Operation and maintenance expense | 48,785 | 36,155 |
Depreciation and amortization expense | 40,356 | 35,059 |
Taxes, other than income | 8,916 | 9,751 |
Operating income | 89,430 | 85,364 |
Other non-operating income | 14,417 | 6,786 |
Interest charges | 13,921 | 11,303 |
Income before income taxes | 89,926 | 80,847 |
Income tax expense | 12,534 | 11,209 |
Net income | 77,392 | 69,638 |
Capital expenditures | 352,116 | $ 246,798 |
Segment Reporting Information, Balance Sheet [Abstract] |  |  |
Net property, plant and equipment | 4,815,777 |  | 4,516,707
Total assets | $ 5,113,402 |  | $ 4,797,206

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