v3.26.1
Utility Regulatory Assets and Liabilities and Regulatory Matters (Tables)
 9 Months Ended
Jun. 30, 2026
Regulated Operations [Abstract]  
Schedule of Regulatory Assets The following regulatory assets and liabilities associated with our Utilities reportable segment are included in our Condensed Consolidated Balance Sheets:
June 30,
2026		September 30,
2025		June 30,
2025
Regulatory assets (a):
Income taxes recoverable$114 $113 $111 
Underfunded pension plans96 100 102 
Environmental costs25 22 27 
Deferred fuel and power costs71 39 15 
Removal costs, net29 30 29 
Other32 36 35 
Total regulatory assets$367 $340 $319 
Regulatory liabilities (a):
Postretirement benefits$13 $14 $12 
Deferred fuel and power refunds5 4 10 
State income tax benefits — distribution system repairs50 49 45 
Excess federal deferred income taxes237 239 243 
Other10 8 13 
Total regulatory liabilities$315 $314 $323 
(a)Regulatory assets are recorded in “Prepaid expenses and other current assets” and “Other assets” on the Condensed Consolidated Balance Sheets. Regulatory liabilities are recorded in “Other current liabilities” and “Other noncurrent liabilities” on the Condensed Consolidated Balance Sheets.
Schedule of Regulatory Liabilities The following regulatory assets and liabilities associated with our Utilities reportable segment are included in our Condensed Consolidated Balance Sheets:
June 30,
2026		September 30,
2025		June 30,
2025
Regulatory assets (a):
Income taxes recoverable$114 $113 $111 
Underfunded pension plans96 100 102 
Environmental costs25 22 27 
Deferred fuel and power costs71 39 15 
Removal costs, net29 30 29 
Other32 36 35 
Total regulatory assets$367 $340 $319 
Regulatory liabilities (a):
Postretirement benefits$13 $14 $12 
Deferred fuel and power refunds5 4 10 
State income tax benefits — distribution system repairs50 49 45 
Excess federal deferred income taxes237 239 243 
Other10 8 13 
Total regulatory liabilities$315 $314 $323 
(a)Regulatory assets are recorded in “Prepaid expenses and other current assets” and “Other assets” on the Condensed Consolidated Balance Sheets. Regulatory liabilities are recorded in “Other current liabilities” and “Other noncurrent liabilities” on the Condensed Consolidated Balance Sheets.