Business Segment Information (Tables)

9 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Financial Segment Information By Segment

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

(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, 2024	$2,815,598	$2,486,740	$998,176	$2,329,894	$8,630,408	$5,067	$(154,438)	$8,481,037
At September 30, 2023	$2,814,218	$2,427,214	$912,923	$2,247,743	$8,402,098	$4,795	$(126,633)	$8,280,260

Quarter Ended June 30, 2023 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$216,581	$62,956	$4,629	$144,538	$428,704	$—	$—	$428,704
Intersegment Revenues	$—	$29,439	$54,277	$79	$83,795	$—	$(83,795)	$—
Segment Profit: Net Income (Loss)	$43,329	$23,813	$24,135	$37	$91,314	$(81)	$1,387	$92,620

Nine Months Ended June 30, 2023 (Thousands)
	Exploration and Production	Pipeline and Storage	Gathering	Utility	Total Reportable Segments	All Other	Corporate and Intersegment Eliminations	Total Consolidated
Revenue from External Customers	$738,107	$194,800	$9,003	$862,914	$1,804,824	$—	$—	$1,804,824
Intersegment Revenues	$—	$90,354	$163,297	$500	$254,151	$—	$(254,151)	$—
Segment Profit: Net Income (Loss)	$195,503	$77,147	$73,207	$55,574	$401,431	$(430)	$2,188	$403,189