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Business Segment Information | 9 Months Ended
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Jun. 30, 2025
Segment Reporting [Abstract] |
Business Segment Information | Business Segment Information The Company reports financial results for four segments: Exploration and Production, Pipeline and Storage, Gathering and Utility. The division of the Company’s operations into reportable segments is based upon a combination of factors including differences in products and services, regulatory environment and geographic factors. The data presented in the tables below reflect financial information for the segments and reconcile to consolidated amounts. As stated in the 2024 Form 10-K, the Company evaluates segment performance based on income before discontinued operations (when applicable). When this is not applicable, the Company evaluates performance based on net income. There have not been any changes in the basis of segmentation nor in the basis of measuring segment profit or loss from those used in the Company’s 2024 Form 10-K. A listing of segment assets at June 30, 2025 and September 30, 2024 is shown in the tables below.
Quarter Ended June 30, 2025 (Thousands) |  |  |  |  |
| Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Revenue from External Customers | $303,883 | $67,982 | $2,519 | $157,446 | $531,830 | $— | $— | $531,830
Intersegment Revenues | $— | $37,597 | $65,354 | $77 | $103,028 | $— | $(103,028) | $—
Segment Profit: Net Income (Loss) | $86,671 | $28,857 | $29,996 | $4,997 | $150,521 | $(209) | $(494) | $149,818
Nine Months Ended June 30, 2025 (Thousands) |  |  |  |  |
| Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Revenue from External Customers | $864,701 | $207,916 | $9,200 | $729,445 | $1,811,262 | $— | $— | $1,811,262
Intersegment Revenues | $— | $113,849 | $184,834 | $279 | $298,962 | $— | $(298,962) | $—
Segment Profit: Net Income (Loss) | $137,722 | $93,019 | $83,483 | $101,040 | $415,264 | $(674) | $(3,428) | $411,162
(Thousands) | Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Segment Assets: |  |  |  |  |  |  |  |
At June 30, 2025 | $2,574,771 | $2,421,610 | $1,024,345 | $2,507,973 | $8,528,699 | $8,216 | $(90,755) | $8,446,160
At September 30, 2024 | $2,644,820 | $2,446,243 | $987,103 | $2,398,709 | $8,476,875 | $6,227 | $(163,332) | $8,319,770
Quarter Ended June 30, 2024 (Thousands) |  |  |  |  |
| Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Revenue from External Customers | $220,905 | $68,035 | $3,644 | $124,858 | $417,442 | $— | $— | $417,442
Intersegment Revenues | $— | $37,384 | $56,476 | $86 | $93,946 | $— | $(93,946) | $—
Segment Profit: Net Income (Loss) | $(112,028) | $30,690 | $24,979 | $2,559 | $(53,800) | $(124) | $(234) | $(54,158)
Nine Months Ended June 30, 2024 (Thousands) |  |  |  |  |
| Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Revenue from External Customers | $739,537 | $204,071 | $12,157 | $616,977 | $1,572,742 | $— | $— | $1,572,742
Intersegment Revenues | $— | $103,781 | $174,544 | $479 | $278,804 | $— | $(278,804) | $—
Segment Profit: Net Income (Loss) | $2,521 | $85,482 | $82,510 | $73,848 | $244,361 | $(341) | $1,114 | $245,134

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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