v3.26.1
Inventories (Tables)
9 Months Ended
Jun. 30, 2026
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
Inventories comprise the following: 
June 30,
2026
September 30,
2025
June 30,
2025
Non-utility LPG and natural gas$160 $162 $159 
Gas Utility natural gas35 67 38 
Energy certificates57 64 64 
Materials, supplies and other100 92 98 
Total inventories$352 $385 $359