v3.25.2
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating expenses        
Fuel $ 589 $ 424 $ 1,674 $ 1,561
Purchased power 550 408 1,516 1,139
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses 922 915 2,771 2,671
Depreciation and amortization 572 542 1,691 1,593
Tax equivalents 156 131 460 405
Operating Expenses 2,789 2,420 8,112 7,369
Operating income 517 459 1,646 1,429
Other income (expense), net 29 14 58 55
Defined Benefit Plan, Other Cost (Credit) 27 25 79 74
Interest expense        
Interest expense 307 267 880 795
Net income (loss) 212 181 745 615
Regulated Operating Revenue 3,261 2,830 9,613 8,654
Unregulated Operating Revenue 45 49 145 144
Regulated and Unregulated Operating Revenue $ 3,306 $ 2,879 $ 9,758 $ 8,798