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v3.25.1

Business Segment Information (Financial Segment Information By Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | $ 729,950 | $ 629,939 | $ 1,279,432 | $ 1,155,301 |
Intersegment Revenues | 0 | 0 | 0 | 0 |
Segment Profit: Net Income (Loss) | 216,358 | 166,272 | 261,344 | 299,292 |
Segment Assets: | 8,479,963 |  | 8,479,963 |  | $ 8,319,770
Total Reportable Segments | Total Reportable Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 729,950 | 629,939 | 1,279,432 | 1,155,301 |
Intersegment Revenues | 100,304 | 97,192 | 195,934 | 184,858 |
Segment Profit: Net Income (Loss) | 219,421 | 166,247 | 264,743 | 298,160 |
Segment Assets: | 8,549,243 |  | 8,549,243 |  | 8,476,875
Exploration and Production | Total Reportable Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 311,958 | 264,614 | 560,818 | 518,633 |
Intersegment Revenues | 0 | 0 | 0 | 0 |
Segment Profit: Net Income (Loss) | 97,828 | 62,065 | 51,051 | 114,548 |
Segment Assets: | 2,551,961 |  | 2,551,961 |  | 2,644,820
Pipeline and Storage | Total Reportable Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 71,185 | 71,210 | 139,935 | 136,036 |
Intersegment Revenues | 38,388 | 36,810 | 76,251 | 66,397 |
Segment Profit: Net Income (Loss) | 31,707 | 30,737 | 64,162 | 54,792 |
Segment Assets: | 2,455,903 |  | 2,455,903 |  | 2,446,243
Gathering | Total Reportable Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 3,233 | 3,917 | 6,681 | 8,513 |
Intersegment Revenues | 61,797 | 60,076 | 119,480 | 118,068 |
Segment Profit: Net Income (Loss) | 26,342 | 28,706 | 53,487 | 57,531 |
Segment Assets: | 1,010,473 |  | 1,010,473 |  | 987,103
Utility | Total Reportable Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 343,574 | 290,198 | 571,998 | 492,119 |
Intersegment Revenues | 119 | 306 | 203 | 393 |
Segment Profit: Net Income (Loss) | 63,544 | 44,739 | 96,043 | 71,289 |
Segment Assets: | 2,530,906 |  | 2,530,906 |  | 2,398,709
All Other | All Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 0 | 0 | 0 | 0 |
Intersegment Revenues | 0 | 0 | 0 | 0 |
Segment Profit: Net Income (Loss) | (271) | (96) | (465) | (217) |
Segment Assets: | 8,384 |  | 8,384 |  | 6,227
Corporate and Intersegment Eliminations | Corporate |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from External Customers | 0 | 0 | 0 | 0 |
Corporate and Intersegment Eliminations | Corporate and Intersegment Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Intersegment Revenues | (100,304) | (97,192) | (195,934) | (184,858) |
Segment Profit: Net Income (Loss) | (2,792) | $ 121 | (2,934) | $ 1,349 |
Segment Assets: | $ (77,664) |  | $ (77,664) |  | $ (163,332)

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