Revenue from Contracts with Customers (Tables)

12 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

The following tables provide a disaggregation of the Company’s revenues for the years ended September 30, 2025, 2024 and 2023, presented by type of service from each reportable segment.


	Year Ended September 30, 2025
Revenues by Type of Service	Integrated Upstream and Gathering		Pipeline and Storage		Utility		Total Reportable Segments		All Other		Corporate and Intersegment Eliminations		Total Consolidated
	(Thousands)
Production of Natural Gas	$	1,104,283	$	—	$	—	$	1,104,283	$	—	$	—	$	1,104,283
Production of Crude Oil	1,837		—		—		1,837		—		—		1,837
Natural Gas Processing	1,196		—		—		1,196		—		—		1,196
Natural Gas Gathering Service	11,813		—		—		11,813		—		—		11,813
Natural Gas Transportation Service	—		324,179		109,443		433,622		—		(108,351)		325,271
Natural Gas Storage Service	—		100,292		—		100,292		—		(42,485)		57,807
Natural Gas Residential Sales	—		—		596,988		596,988		—		—		596,988
Natural Gas Commercial Sales	—		—		84,515		84,515		—		—		84,515
Natural Gas Industrial Sales	—		—		4,403		4,403		—		(4)		4,399
Other	18,050		3,130		10,813		31,993		—		(985)		31,008
Total Revenues from Contracts with Customers	1,137,179		427,601		806,162		2,370,942		—		(151,825)		2,219,117
Alternative Revenue Programs	—		—		11,467		11,467		—		—		11,467
Derivative Financial Instruments	46,957		—		—		46,957		—		—		46,957
Total Revenues	$	1,184,136	$	427,601	$	817,629	$	2,429,366	$	—	$	(151,825)	$	2,277,541


	Year Ended September 30, 2024
Revenues by Type of Service	Integrated Upstream and Gathering		Pipeline and Storage		Utility		Total Reportable Segments		All Other		Corporate and Intersegment Eliminations		Total Consolidated
	(Thousands)
Production of Natural Gas	$	738,778	$	—	$	—	$	738,778	$	—	$	—	$	738,778
Production of Crude Oil	2,298		—		—		2,298		—		—		2,298
Natural Gas Processing	1,053		—		—		1,053		—		—		1,053
Natural Gas Gathering Service	15,537		—		—		15,537		—		—		15,537
Natural Gas Transportation Service	—		311,900		103,866		415,766		—		(99,658)		316,108
Natural Gas Storage Service	—		95,933		—		95,933		—		(40,995)		54,938
Natural Gas Residential Sales	—		—		502,744		502,744		—		—		502,744
Natural Gas Commercial Sales	—		—		68,466		68,466		—		—		68,466
Natural Gas Industrial Sales	—		—		3,103		3,103		—		(5)		3,098
Other	1,937		4,560		(1,256)		5,241		—		(902)		4,339
Total Revenues from Contracts with Customers	759,603		412,393		676,923		1,848,919		—		(141,560)		1,707,359
Alternative Revenue Programs	—		—		20,439		20,439		—		—		20,439
Derivative Financial Instruments	217,012		—		—		217,012		—		—		217,012
Total Revenues	$	976,615	$	412,393	$	697,362	$	2,086,370	$	—	$	(141,560)	$	1,944,810


	Year Ended September 30, 2023
Revenues by Type of Service	Integrated Upstream and Gathering		Pipeline and Storage		Utility		Total Reportable Segments		All Other		Corporate and Intersegment Eliminations		Total Consolidated
	(Thousands)
Production of Natural Gas	$	1,036,499	$	—	$	—	$	1,036,499	$	—	$	—	$	1,036,499
Production of Crude Oil	2,261		—		—		2,261		—		—		2,261
Natural Gas Processing	1,203		—		—		1,203		—		—		1,203
Natural Gas Gathering Service	13,891		—		—		13,891		—		—		13,891
Natural Gas Transportation Service	—		291,225		98,304		389,529		—		(82,889)		306,640
Natural Gas Storage Service	—		84,962		—		84,962		—		(36,283)		48,679
Natural Gas Residential Sales	—		—		727,728		727,728		—		—		727,728
Natural Gas Commercial Sales	—		—		103,270		103,270		—		—		103,270
Natural Gas Industrial Sales	—		—		5,658		5,658		—		(7)		5,651

Other	6,507		3,004		508		10,019		—		(947)		9,072
Total Revenues from Contracts with Customers	1,060,361		379,191		935,468		2,375,020		—		(120,126)		2,254,894
Alternative Revenue Programs	—		—		6,892		6,892		—		—		6,892
Derivative Financial Instruments	(88,015)		—		—		(88,015)		—		—		(88,015)
Total Revenues	$	972,346	$	379,191	$	942,360	$	2,293,897	$	—	$	(120,126)	$	2,173,771