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Property, Plant and Equipment | 12 Months Ended
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Sep. 30, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Note 11 — Property, Plant and Equipment Property, plant and equipment comprise the following at September 30:
| 2024 |  | 2023 |  | Estimated Useful Life
Utility: |  |  |  |  |
Distribution | $ | 5,595 |  |  | $ | 5,204 |  |  |
Transmission | 125 |  |  | 123 |  |  |
General and other | 706 |  |  | 660 |  |  |
Work in process | 94 |  |  | 95 |  |  |
Total Utility | 6,520 |  |  | 6,082 |  |  |
Non-utility: |  |  |  |  |
Land | 172 |  |  | 174 |  |  |
Buildings and improvements | 429 |  |  | 418 |  |  | 10 - 40 years
Transportation equipment | 233 |  |  | 238 |  |  | 3 - 10 years
Equipment, primarily cylinders and tanks | 3,985 |  |  | 3,903 |  |  | 5 - 30 years
Electric generation | 48 |  |  | 190 |  |  | 25 - 40 years
Pipeline and related assets | 1,598 |  |  | 1,577 |  |  | 25 - 40 years
Other | 430 |  |  | 390 |  |  | 1 - 12 years
Work in process | 258 |  |  | 156 |  |  |
Total non-utility | 7,153 |  |  | 7,046 |  |  |
Total property, plant and equipment | $ | 13,673 |  |  | $ | 13,128 |  |  |
The average composite depreciation rates at our Gas Utility and Electric Utility were as follows:
| 2024 |  | 2023 |  | 2022
Regulated natural gas utilities | 2.6 | % |  | 2.4 | % |  | 2.6 | %
Electric Utility | 2.5 | % |  | 2.3 | % |  | 2.4 | %
Depreciation expense totaled $496, $476 and $460 for Fiscal 2024, Fiscal 2023 and Fiscal 2022, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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