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CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
Jun. 30, 2020
Sep. 30, 2019
Current assets    
Cash and cash equivalents $ 800,000,000 $ 299,000,000
Accounts receivable, net 1,364,000,000 1,739,000,000
Inventories, net 1,060,000,000 999,000,000
Regulatory assets 149,000,000 156,000,000
Other current assets 90,000,000 85,000,000
Total current assets 3,463,000,000 3,278,000,000
Property, plant, and equipment    
Completed plant 64,027,000,000 62,944,000,000
Less accumulated depreciation (32,753,000,000) (31,384,000,000)
Net completed plant 31,274,000,000 31,560,000,000
Construction in progress 2,088,000,000 1,893,000,000
Nuclear fuel 1,533,000,000 1,534,000,000
Capital leases 139,000,000 146,000,000
Total property, plant, and equipment, net 35,034,000,000 35,133,000,000
Investment funds 2,991,000,000 2,968,000,000
Regulatory and other long-term assets    
Regulatory assets 9,251,000,000 8,763,000,000
Operating Lease, Right-of-Use Asset 332,000,000 0
Other long-term assets 339,000,000 325,000,000
Total regulatory and other long-term assets 9,922,000,000 9,088,000,000
Total assets 51,410,000,000 50,467,000,000
Current liabilities    
Accounts payable and accrued liabilities 2,055,000,000 1,812,000,000
Accrued interest 280,000,000 296,000,000
Current portion of leaseback obligations 177,000,000 40,000,000
Regulatory liabilities 197,000,000 150,000,000
Short-term debt, net 777,000,000 922,000,000
Current maturities of power bonds 1,917,000,000 1,030,000,000
Current maturities of long-term debt of variable interest entities 40,000,000 39,000,000
Current maturities of notes payable 0 23,000,000
Total current liabilities 5,443,000,000 4,312,000,000
Other liabilities    
Post-retirement and post-employment benefit obligations 5,912,000,000 6,181,000,000
Asset retirement obligations 5,805,000,000 5,453,000,000
Operating Lease, Liability, Noncurrent 244,000,000  
Operating Lease, Liability, Current 101,000,000 0
Other long-term liabilities 2,748,000,000 2,490,000,000
Leaseback obligations 46,000,000 223,000,000
Regulatory liabilities 5,000,000 0
Total other liabilities 14,760,000,000 14,347,000,000
Long-term debt, net    
Long-term power bonds, net 17,932,000,000 19,094,000,000
Long-term debt of variable interest entities, net 1,069,000,000 1,089,000,000
Total long-term debt, net 19,001,000,000 20,183,000,000
Liabilities 39,204,000,000 38,842,000,000
Proprietary capital    
Power program appropriation investment 258,000,000 258,000,000
Power program retained earnings 11,476,000,000 10,823,000,000
Total power program proprietary capital 11,734,000,000 11,081,000,000
Nonpower programs appropriation investment, net 550,000,000 556,000,000
Accumulated other comprehensive income (loss) (78,000,000) (12,000,000)
Total proprietary capital 12,206,000,000 11,625,000,000
Total liabilities and proprietary capital $ 51,410,000,000 $ 50,467,000,000