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Other Long-Term Liabilities Other Long-Term Liabilities (Details) - USD ($) $ in Millions | Sep. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Other Long-Term Liabilities |  |  |  |
Interest rate swap liabilities | $ 1,938 |  | $ 1,627 |
Capital lease obligations | 409 |  | 537 |
Currency swap liabilities | 162 | [1] | 47 | [2]
EnergyRight financing obligation | 183 |  | 208 |
Regulatory liabilities | 3 |  | 2 |
Total other long-term liabilities | 2,776 |  | 2,221 |
Other long-term liabilities |  |  |  |
Other Long-Term Liabilities |  |  |  |
Interest rate swap liabilities | 1,938 |  | 1,627 |
Capital lease obligations | 177 |  | 100 |
Currency swap liabilities | 162 |  | 47 |
EnergyRight financing obligation | 130 |  | 148 |
Environmental agreements liability | 18 |  | 55 |
Membership interests of VIE subject to mandatory redemption | 33 |  | 35 |
Commodity contract derivative liabilities | 49 |  | 17 |
Regulatory liabilities | 3 |  | 2 |
Commodity swap derivative liabilities | 2 |  | 10 |
Other | 264 |  | 180 |
Accounts payable and accrued liabilities |  |  |  |
Other Long-Term Liabilities |  |  |  |
EnergyRight financing obligation | $ 33 |  | $ 37 |
[1] | Due to the right of setoff and method of settlement, TVA elects to record commodity derivatives under the FTP based on its net commodity position with the counterparty or FCM. Deposits are made to TVA's margin cash accounts held with each FCM to offset any net liability positions in full for derivatives that are transacted with FCMs. 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 14 — Offsetting of Derivative Assets and Liabilities.
[2] | Due to the right of setoff and method of settlement, TVA elects to record commodity derivatives under the FTP based on its net commodity position with the counterparty or FCM. Deposits are made to TVA's margin cash accounts held with each FCM to offset any net liability positions in full for derivatives that are transacted with FCMs. TVA records currency swaps net of any 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 14 — Offsetting of Derivative Assets and Liabilities.

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- Definition Carrying amount as of the balance sheet date of the liability arising from commodity contracts such as futures contracts tied to the movement of a particular commodity, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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