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Other Long-Term Liabilities (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Sep. 30, 2020
Other Long-Term Liabilities |  |  |
Finance Lease, Liability |  | $ 143 | $ 171
Interest rate swap liabilities |  | 1,512 | 2,041
Capital lease obligations |  | 0 | 25
Currency swap liabilities | [1] | 86 | 209
EnergyRight® financing obligation |  | (99) | (108)
Total other long-term liabilities |  | 1,867 | 2,548
Regulatory Liability, Noncurrent |  | 5 | 23
Increase (Decrease) in Derivative Liabilities |  | (529) |
Deferral of EnergyRight loans |  | 1 |
Accounts payable and accrued liabilities |  |  |
Other Long-Term Liabilities |  |  |
Obligations under long-term service agreements |  | (20) | (15)
Interest rate swap liabilities |  | 114 |
EnergyRight® financing obligation |  | (18) | (19)
Other long-term liabilities |  |  |
Other Long-Term Liabilities |  |  |
Obligations under long-term service agreements |  | (40) | (56)
Interest rate swap liabilities |  | 1,398 | 1,927
Currency swap liabilities |  | 21 | 123
EnergyRight® financing obligation |  | (71) | (78)
Other |  | $ 194 | $ 193
[1] | TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 13 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.

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- Definition Obligations under long-term service agreements with manufacturers that provide for certain maintenance, monitoring, and outage support. + References No definition available. + Details
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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121616839&loc=d3e45280-112737 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121569800&loc=d3e45023-112735 + Details
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