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v3.25.1

Other Long-Term Assets (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Sep. 30, 2024
Other Long-Term Assets |  |
Loans and other long-term receivables, net | $ 96 | $ 84
EnergyRight® receivables, net | 56 | 56
Other Intangible Assets, Net | 76 | 35
Prepaid Expense, Noncurrent | 67 | 62
Prepaid capital assets | 54 | 29
Total other long-term assets | 423 | 344
Prepaid Expense, Current | 14 | 7
Financing Receivable, after Allowance for Credit Loss, Current | 8 | 21
EnergyRight® financing obligation | 73 | 74
Prepaid long-term service agreements, current | 14 | 7
Accounts and Financing Receivable, Allowance for Credit Loss | 2 | 2
EnergyRight loan reserve |  |
Other Long-Term Assets |  |
Accounts and Financing Receivable, Allowance for Credit Loss | 1 | 1
Economic development loan specific loan reserve |  |
Other Long-Term Assets |  |
Accounts and Financing Receivable, Allowance for Credit Loss | 1 | 1
Accounts Receivable [Member] |  |
Other Long-Term Assets |  |
EnergyRight® receivables, net | 12 | 12
Other long-term assets |  |
Other Long-Term Assets |  |
EnergyRight® receivables, net | 44 | 44
Other | 78 | 88
Other current assets |  |
Other Long-Term Assets |  |
Other Intangible Assets, Net | 5 | 13
Other long-term assets |  |
Other Long-Term Assets |  |
Commodity Contract Asset, Noncurrent | $ 8 | $ 2
Energy Right |  |
Other Long-Term Assets |  |
Number of days in default | 180 days |
Energy Right | Minimum |  |
Other Long-Term Assets |  |
Debt Instrument, Term | 5 years |
Energy Right | Maximum |  |
Other Long-Term Assets |  |
Debt Instrument, Term | 10 years |

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