XML 61 R49.htm IDEA: XBRL DOCUMENT 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)