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Business Segment Information (Tables) | 6 Months Ended
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Mar. 31, 2025
Segment Reporting [Abstract] |
Financial Segment Information By Segment | A listing of segment assets at March 31, 2025 and September 30, 2024 is shown in the tables below.
Quarter Ended March 31, 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 | $311,958 | $71,185 | $3,233 | $343,574 | $729,950 | $— | $— | $729,950
Intersegment Revenues | $— | $38,388 | $61,797 | $119 | $100,304 | $— | $(100,304) | $—
Segment Profit: Net Income (Loss) | $97,828 | $31,707 | $26,342 | $63,544 | $219,421 | $(271) | $(2,792) | $216,358
Six Months Ended March 31, 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 | $560,818 | $139,935 | $6,681 | $571,998 | $1,279,432 | $— | $— | $1,279,432
Intersegment Revenues | $— | $76,251 | $119,480 | $203 | $195,934 | $— | $(195,934) | $—
Segment Profit: Net Income (Loss) | $51,051 | $64,162 | $53,487 | $96,043 | $264,743 | $(465) | $(2,934) | $261,344
(Thousands) | Exploration and Production | Pipeline and Storage | Gathering | Utility | Total Reportable Segments | All Other | Corporate and Intersegment Eliminations | Total Consolidated
Segment Assets: |  |  |  |  |  |  |  |
At March 31, 2025 | $2,551,961 | $2,455,903 | $1,010,473 | $2,530,906 | $8,549,243 | $8,384 | $(77,664) | $8,479,963
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 March 31, 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 | $264,614 | $71,210 | $3,917 | $290,198 | $629,939 | $— | $— | $629,939
Intersegment Revenues | $— | $36,810 | $60,076 | $306 | $97,192 | $— | $(97,192) | $—
Segment Profit: Net Income (Loss) | $62,065 | $30,737 | $28,706 | $44,739 | $166,247 | $(96) | $121 | $166,272
Six Months Ended March 31, 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 | $518,633 | $136,036 | $8,513 | $492,119 | $1,155,301 | $— | $— | $1,155,301
Intersegment Revenues | $— | $66,397 | $118,068 | $393 | $184,858 | $— | $(184,858) | $—
Segment Profit: Net Income (Loss) | $114,548 | $54,792 | $57,531 | $71,289 | $298,160 | $(217) | $1,349 | $299,292

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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