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CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Millions
Jun. 30, 2018
Sep. 30, 2017
Current assets    
Cash and cash equivalents $ 299 $ 300
Restricted cash 13 0
Accounts receivable, net 1,600 1,569
Inventories, net 1,050 1,065
Regulatory assets 421 447
Other current assets 108 65
Total current assets 3,491 3,446
Property, plant, and equipment    
Completed plant 60,468 58,947
Less accumulated depreciation (28,724) (28,404)
Net completed plant 31,744 30,543
Construction in progress 1,838 2,842
Nuclear fuel 1,335 1,401
Capital leases 152 161
Total property, plant, and equipment, net 35,069 34,947
Investment funds 2,724 2,603
Regulatory and other long-term assets    
Regulatory assets 8,006 8,698
Other long-term assets 317 323
Total regulatory and other long-term assets 8,323 9,021
Total assets 49,607 50,017
Current liabilities    
Accounts payable and accrued liabilities 1,812 1,940
Accrued interest 293 346
Current portion of leaseback obligations 38 37
Current portion of energy prepayment obligations 35 100
Regulatory liabilities 166 163
Short-term debt, net 1,886 1,998
Current maturities of power bonds 1,032 1,728
Current maturities of long-term debt of variable interest entities 37 36
Current maturities of notes payable 47 53
Total current liabilities 5,346 6,401
Other liabilities    
Post-retirement and post-employment benefit obligations 5,251 5,477
Asset retirement obligations 4,249 4,176
Other long-term liabilities 2,766 3,055
Leaseback obligations 264 302
Energy prepayment obligations 0 10
Regulatory liabilities 19 25
Total other liabilities 12,549 13,045
Long-term debt, net    
Long-term power bonds, net 20,164 20,205
Long-term debt of variable interest entities, net 1,146 1,164
Long-term notes payable 23 69
Total long-term debt, net 21,333 21,438
Total liabilities 39,228 40,884
Proprietary capital    
Power program appropriation investment 258 258
Power program retained earnings 9,504 8,282
Total power program proprietary capital 9,762 8,540
Nonpower programs appropriation investment, net 566 572
Accumulated other comprehensive income (loss) 51 21
Total proprietary capital 10,379 9,133
Total liabilities and proprietary capital $ 49,607 $ 50,017