v3.26.1
Business Segment Information
 6 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
Business Segment Information Business Segment Information    
 
    The Company reports financial results for three segments: Integrated Upstream and Gathering, Pipeline and Storage, and Utility. The division of the Company’s operations into reportable segments is based on a combination of factors including differences in products and services as well as regulatory environments. As reported in the Company's 2025 Form 10-K, the segment reporting structure was modified to merge the Exploration and Production segment and Gathering segment into one reportable segment called Integrated Upstream and Gathering. Prior year segment information shown below has been recast to reflect this change in presentation. The Company's Chief Executive Officer, its Chief Operating Decision Maker (CODM), evaluates segment performance primarily using earnings attributable to the Company. External reporting is consistent with the internal financial reports used by the CODM to regularly assess performance of the business, make operating decisions and allocate resources.

    The Integrated Upstream and Gathering segment is composed of the operations of Seneca and Midstream Company. Seneca is engaged in the exploration for and development of natural gas reserves in the Appalachian region of the United States. Midstream Company builds, owns and operates natural gas processing and pipeline gathering facilities in the Appalachian region, primarily providing gathering services to Seneca.

    The Pipeline and Storage segment operations are regulated by the FERC for both Supply Corporation and Empire. Supply Corporation transports and stores natural gas for utilities (including Distribution Corporation), natural gas marketers, exploration and production companies (including Seneca) and pipeline companies serving northeastern United States markets. Empire transports and stores natural gas for major industrial companies, utilities (including Distribution Corporation) and power producers in New York State. Empire also transports natural gas for utilities (including Distribution Corporation), natural gas marketers and exploration and production companies (including Seneca) from producing areas in Pennsylvania to markets in New York and to interstate pipeline delivery points with access to additional markets in the northeastern United States and Canada.

    The Utility segment operations are regulated by the NYPSC and the PaPUC and are carried out by Distribution Corporation. Distribution Corporation sells natural gas to retail customers and provides natural gas transportation services in western New York and northwestern Pennsylvania.

    The data presented in the tables below reflects financial information for the segments and reconciles to consolidated amounts.  As stated in the 2025 Form 10-K, the Company evaluates segment performance based on income before discontinued operations, when applicable.  If discontinued operations are not applicable, the Company evaluates performance based on net income.  There have been no changes in the basis of segmentation or in the basis of measuring segment profit or loss from those used in the Company’s 2025 Form 10-K.  A listing of segment assets at March 31, 2026 and September 30, 2025 is shown in the tables below.
Quarter Ended March 31, 2026
 Integrated
Upstream
and
Gathering		Pipeline
and
Storage		UtilityTotal
Reportable
Segments
All
   Other(4)
Corporate
and
Intersegment
  Eliminations(4)
Total
Consolidated
 (Thousands)
Revenue from External Customers(1)
$358,823 $73,762 $425,788 $858,373 $— $— $858,373 
Intersegment Revenues
— 37,701 126 37,827 — (37,827)— 
  Total Revenues358,823 111,463 425,914 896,200 — (37,827)858,373 
Operation and Maintenance Expense(2):
Upstream General and Administrative Expense18,472 — — 18,472 — (63)18,409 
Lease Operating Expense17,362 — — 17,362 — (534)16,828 
Gathering Operation and Maintenance Expense13,805 — — 13,805 — (69)13,736 
All Other Operation and Maintenance Expense3,102 31,172 68,129 102,403 — 7,408 109,811 
Purchased Gas Expense(2)
— — 244,860 244,860 — (37,009)207,851 
Depreciation, Depletion and Amortization Expense(2)
80,548 19,961 18,601 119,110 — 219 119,329 
Interest Expense(2)
15,111 11,779 11,138 38,028 118 (4,412)33,734 
Interest Income(380)(870)(1,165)(2,415)— 512 (1,903)
Income Tax Expense (Benefit)(2)
55,049 10,558 17,999 83,606 262 (1,133)82,735 
Other Expense (Income) Items(3)
3,724 7,257 1,003 11,984 (1,248)(561)10,175 
Segment Profit: Net Income (Loss)
$152,030 $31,606 $65,349 $248,985 $868 $(2,185)$247,668 
Expenditures for Additions to Long-Lived Assets
$165,727 $37,026 $30,500 $233,253 $— $(297)$232,956 
Six Months Ended March 31, 2026
 Integrated
Upstream
and
Gathering		Pipeline
and
Storage		UtilityTotal
Reportable
Segments
All
   Other(4)
Corporate
and
Intersegment
  Eliminations(4)
Total
Consolidated
 (Thousands)
Revenue from External Customers(1)
$682,045 $142,999 $684,837 $1,509,881 $— $— $1,509,881 
Intersegment Revenues
— 75,365 215 75,580 — (75,580)— 
  Total Revenues682,045 218,364 685,052 1,585,461 — (75,580)1,509,881 
Operation and Maintenance Expense(2):
Upstream General and Administrative Expense37,878 — — 37,878 — (125)37,753 
Lease Operating Expense34,187 — — 34,187 — (1,323)32,864 
Gathering Operation and Maintenance Expense24,193 — — 24,193 — (138)24,055 
All Other Operation and Maintenance Expense6,481 58,435 129,126 194,042 — 13,059 207,101 
Purchased Gas Expense(2)
— — 367,145 367,145 — (73,688)293,457 
Depreciation, Depletion and Amortization Expense(2)
164,810 39,063 37,081 240,954 — 400 241,354 
Interest Expense(2)
31,245 23,580 22,744 77,569 254 (713)77,110 
Interest Income(573)(1,835)(2,203)(4,611)(10)(60)(4,681)
Income Tax Expense (Benefit)(2)
99,159 20,925 25,335 145,419 225 (3,572)142,072 
Other Expense (Income) Items(3)
8,588 15,371 6,385 30,344 (1,215)354 29,483 
Segment Profit: Net Income (Loss)
$276,077 $62,825 $99,439 $438,341 $746 $(9,774)$429,313 
Expenditures for Additions to Long-Lived Assets
$307,576 $74,628 $73,594 $455,798 $— $(121)$455,677 
Integrated
Upstream
and
Gathering		Pipeline
and
Storage		UtilityTotal
Reportable
Segments
All
   Other(4)
Corporate
and
Intersegment
  Eliminations(4)
Total
Consolidated
(Thousands)
Segment Assets:
At March 31, 2026$4,011,274 $2,528,382 $2,692,866 $9,232,522 $9,888 $(114,806)$9,127,604 
At September 30, 2025$3,701,646 $2,412,747 $2,534,289 $8,648,682 $8,704 $61,718 $8,719,104 
Quarter Ended March 31, 2025
 Integrated
Upstream
and
Gathering		Pipeline
and
Storage		UtilityTotal
Reportable
Segments
All
   Other(4)
Corporate and
Intersegment
  Eliminations(4)
Total
Consolidated
 (Thousands)
Revenue from External Customers(1)
$315,191 $71,185 $343,574 $729,950 $— $— $729,950 
Intersegment Revenues
— 38,388 119 38,507 — (38,507)— 
  Total Revenues315,191 109,573 343,693 768,457 — (38,507)729,950 
Operation and Maintenance Expense(2):
Upstream General and Administrative Expense18,847 — — 18,847 — (59)18,788 
Lease Operating Expense12,494 — — 12,494 — (1,623)10,871 
Gathering Operation and Maintenance Expense9,160 — — 9,160 — (65)9,095 
All Other Operation and Maintenance Expense3,310 30,642 64,444 98,396 — 3,719 102,115 
Purchased Gas Expense(2)
— — 171,777 171,777 — (36,439)135,338 
Depreciation, Depletion and Amortization Expense(2)
75,456 18,547 17,135 111,138 — 139 111,277 
Interest Expense(2)
22,824 11,700 10,927 45,451 131 (825)44,757 
Interest Income(529)(1,797)(445)(2,771)— 519 (2,252)
Income Tax Expense (Benefit)(2)
44,879 10,961 16,677 72,517 (82)(1,066)71,369 
Other Expense (Income) Items(3)
4,580 7,813 (366)12,027 222 (15)12,234 
Segment Profit: Net Income (Loss)
$124,170 $31,707 $63,544 $219,421 $(271)$(2,792)$216,358 
Expenditures for Additions to Long-Lived Assets
$123,363 $15,626 $41,867 $180,856 $— $174 $181,030 

Six Months Ended March 31, 2025
 Integrated
Upstream
and
Gathering		Pipeline
and
Storage		UtilityTotal
Reportable
Segments
All
   Other(4)
Corporate and
Intersegment
  Eliminations(4)
Total
Consolidated
 (Thousands)
Revenue from External Customers(1)
$567,499 $139,935 $571,998 $1,279,432 $— $— $1,279,432 
Intersegment Revenues
— 76,251 203 76,454 — (76,454)— 
  Total Revenues567,499 216,186 572,201 1,355,886 — (76,454)1,279,432 
Operation and Maintenance Expense(2):
Upstream General and Administrative Expense38,173 — — 38,173 — (118)38,055 
Lease Operating Expense23,145 — — 23,145 — (3,210)19,935 
Gathering Operation and Maintenance Expense15,894 — — 15,894 — (129)15,765 
All Other Operation and Maintenance Expense7,178 57,677 120,704 185,559 — 6,281 191,840 
Purchased Gas Expense(2)
— — 273,249 273,249 — (72,574)200,675 
Depreciation, Depletion and Amortization Expense(2)
149,274 37,132 33,962 220,368 — 279 220,647 
Impairment of Assets (Significant Non-Cash Item)(2)
141,802 — — 141,802 — — 141,802 
Interest Expense(2)
42,235 23,428 21,643 87,306 248 (5,054)82,500 
Interest Income(1,208)(3,803)(1,094)(6,105)— 2,170 (3,935)
Income Tax Expense (Benefit)(2)
38,428 22,138 23,699 84,265 (141)(1,573)82,551 
Other Expense (Income) Items(3)
8,040 15,452 3,995 27,487 358 408 28,253 
Segment Profit: Net Income (Loss)
$104,538 $64,162 $96,043 $264,743 $(465)$(2,934)$261,344 
Expenditures for Additions to Long-Lived Assets
$258,992 $35,417 $78,298 $372,707 $— $378 $373,085 
(1)All Revenue from External Customers originated in the United States.
(2)The Company considers this line to be a significant expense.
(3)Consists of Property, Franchise and Other Taxes, Non-Service Pension and Post-Retirement Benefits Costs (Credits), Other (Income) Deductions, and Purchased Gas Expense for the Pipeline and Storage Segment.
(4)Corporate and All Other categories primarily represent other non-segment business activities and eliminating entries.