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CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Millions
Mar. 31, 2024
Sep. 30, 2023
Current assets    
Cash and cash equivalents $ 508 $ 501
Accounts receivable, net 1,445 1,745
Inventories, net 1,127 1,108
Regulatory assets 230 178
Prepaid Expense and Other Assets, Current 156 134
Total current assets 3,466 3,666
Property, plant, and equipment    
Completed plant 67,339 68,199
Less accumulated depreciation (35,000) (35,871)
Property, Plant, and Equipment, Owned, Net 32,339 32,328
Construction in progress 3,795 3,238
Nuclear fuel 1,317 1,344
Finance lease, asset 722 572
Total property, plant, and equipment, net 38,173 37,482
Investment funds 4,655 4,123
Regulatory and other long-term assets    
Regulatory assets 5,540 5,566
Operating Lease, Right-of-Use Asset 174 177
Other long-term assets 332 330
Investments and Other Noncurrent Assets 6,046 6,073
Total assets 52,340 51,344
Current liabilities    
Accounts payable and accrued liabilities 2,467 2,618
Accrued interest 286 272
Asset Retirement Obligation, Current 311 272
Regulatory liabilities 207 222
Short-term debt, net 819 432
Current maturities of power bonds 1,022 1,022
Current maturities of long-term debt of variable interest entities 36 35
Total current liabilities 5,148 4,873
Other liabilities    
Post-retirement and post-employment benefit obligations 2,416 2,527
Asset retirement obligations 7,281 7,217
Finance Lease, Liability 695 576
Other long-term liabilities 1,436 1,211
Regulatory liabilities 94 107
Liabilities, Other than Long-Term Debt, Noncurrent 11,922 11,638
Long-term debt, net    
Long-term power bonds, net 17,866 17,844
Long-term debt of variable interest entities, net 915 933
Total long-term debt, net 18,781 18,777
Total liabilities 35,851 35,288
Proprietary capital    
Power program appropriation investment 258  
Power program retained earnings 15,736  
Total power program proprietary capital 15,994 15,560
Nonpower programs appropriation investment, net 521  
Accumulated other comprehensive income (loss) (26)  
Total proprietary capital 16,489 16,056
Liabilities and Equity $ 52,340 $ 51,344