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v3.23.3

Note 14 - Information by Operating Segment - Segment Information by Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Revenues from external customers | $ 2,666.3 | $ 2,198.5 | $ 2,235.5
Intersegment revenues | 0.0 | 0.0 | 0.0
Operating Revenues | 2,666.3 | 2,198.5 | 2,235.5
Depreciation and amortization | 254.8 | 237.3 | 213.1
Interest Expense | 185.7 | 119.8 | 106.6
Income Tax Expense | 38.8 | 58.9 | 68.5
Net economic earnings (loss) | 228.1 | 216.3 | 266.3
Capital expenditures | 662.5 | 552.2 | 624.8
Consolidation, Eliminations [Member] |  |  |
Revenues from external customers | 0.0 | 0.0 | 0.0
Intersegment revenues | (52.5) | (51.7) | (48.0)
Operating Revenues | (52.5) | (51.7) | (48.0)
Depreciation and amortization | 0.0 | 0.0 | 0.0
Interest Expense | (34.9) | (8.8) | (1.4)
Income Tax Expense | 0.0 | 0.0 | 0.0
Net economic earnings (loss) | 0.0 | 0.0 | 0.0
Capital expenditures | 0.0 | 0.0 | 0.0
Gas Utility [Member] | Operating Segments [Member] |  |  |
Revenues from external customers | 2,456.6 | 1,945.6 | 2,118.2
Intersegment revenues | 0.3 | 0.5 | 1.1
Operating Revenues | 2,456.9 | 1,946.1 | 2,119.3
Depreciation and amortization | 244.4 | 227.9 | 204.4
Interest Expense | 139.9 | 86.4 | 74.7
Income Tax Expense | 32.7 | 49.6 | 56.9
Net economic earnings (loss) | 200.5 | 202.7 | 230.6
Capital expenditures | 588.6 | 528.6 | 590.4
Gas Marketing [Member] | Operating Segments [Member] |  |  |
Revenues from external customers | 179.1 | 234.9 | 96.5
Intersegment revenues | 0.0 | 0.0 | 0.0
Operating Revenues | 179.1 | 234.9 | 96.5
Depreciation and amortization | 1.5 | 1.4 | 1.2
Interest Expense | 0.0 | 0.0 | 0.0
Income Tax Expense | 12.8 | 11.9 | 13.4
Net economic earnings (loss) | 47.6 | 27.0 | 47.0
Capital expenditures | 0.4 | 0.9 | 0.7
Midstream [Member] | Operating Segments [Member] |  |  |
Revenues from external customers | 29.9 | 17.4 | 19.9
Intersegment revenues | 36.2 | 35.7 | 32.7
Operating Revenues | 66.1 | 53.1 | 52.6
Depreciation and amortization | 8.4 | 7.5 | 6.9
Interest Expense | 8.6 | 4.9 | 4.0
Income Tax Expense | 3.8 | 4.5 | 4.4
Net economic earnings (loss) | 14.1 | 11.1 | 11.1
Capital expenditures | 73.6 | 22.6 | 33.0
Other Segments [Member] |  |  |
Depreciation and amortization | 0.5 | 0.5 | 0.6
Interest Expense | 72.1 | 37.3 | 29.3
Income Tax Expense | (10.5) | (7.1) | (6.2)
Other Segments [Member] | Consolidation, Eliminations [Member] |  |  |
Revenues from external customers | 0.7 | 0.6 | 0.9
Intersegment revenues | 16.0 | 15.5 | 14.2
Operating Revenues | 16.7 | 16.1 | 15.1
Net economic earnings (loss) | (34.1) | (24.5) | (22.4)
Capital expenditures | $ (0.1) | $ 0.1 | $ 0.7

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