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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Sep. 30, 2024
Sep. 30, 2023
Current assets    
Cash and Cash Equivalents, at Carrying Value $ 502 $ 501
Accounts receivable, net 1,801 1,745
Inventories, net 1,155 1,108
Regulatory assets 191 178
Other current assets 120 134
Total current assets 3,769 3,666
Property, Plant and Equipment, Gross 70,989 68,199
Property, plant, and equipment    
Less accumulated depreciation (38,793) (35,871)
Net completed plant 32,196 32,328
Construction in progress 4,879 3,238
Nuclear fuel 1,261 1,344
Finance Lease, Right-of-Use-Asset, after Accumulated Amortization 729 572
Total property, plant, and equipment, net 39,065 37,482
Long-term Investments 4,968 4,123
Regulatory and other long-term assets    
Regulatory assets 9,408 5,566
Operating Lease, Right-of-Use Asset 149 177
Other long-term assets 344 330
Investments and Other Noncurrent Assets 9,901 6,073
Total assets 57,703 51,344
Current liabilities    
Accounts payable and accrued liabilities 2,910 2,618
Accrued interest 280 272
Asset Retirement Obligation, Current 283 272
Regulatory liabilities 174 222
Short-term debt, net of discounts 1,167 432
Total Current maturities of power bonds issued at par 1,022 1,022
Current maturities of long-term debt of variable interest entities issued at par 37 35
Total current liabilities 5,873 4,873
Other liabilities    
Post-retirement and post-employment benefit obligations 2,887 2,527
Asset retirement obligations 10,523 7,217
Finance Lease, Liability, Noncurrent 700 576
Other long-term liabilities 1,712 1,211
Non-current regulatory liabilities 83 107
Noncurrent Liabilities Other than Long-Term Debt 15,905 11,638
Long-term debt, net    
Long-term power bonds, net 17,867 17,844
Long-term debt of variable interest entities, net 897 933
Total long-term debt, net 18,764 18,777
Total liabilities 40,542 35,288
Proprietary capital    
Power program appropriation investment 258 258
Power program retained earnings 16,437 15,302
Total power program proprietary capital 16,695 15,560
Nonpower programs appropriation investment, net 518 525
Accumulated other comprehensive income (loss) (52) (29)
Total proprietary capital 17,161 16,056
Liabilities and Equity $ 57,703 $ 51,344