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Debt and Other Obligations Debt and Other Obligations - Debt Outstanding (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2016 USD ($) Electronotes | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($)
Short-term debt |  |  |  |
Short-term debt, net |  | $ 1,407 | $ 1,034 | $ 596
Current maturities of long-term debt of variable interest entities |  | 35 | 33 |
Current maturities of power bonds |  | 1,555 | 32 |
Total current debt outstanding, net |  | 3,024 | 1,099 |
Current maturities of notes payable |  | 27 | 0 |
Long-term debt |  |  |  |
Long-term debt of variable interest entities, net |  | 1,199 | 1,233 |
Long-term notes payable |  | 48 | 0 |
Total long-term debt, net |  | 22,148 | 23,850 |
Long-term power bonds, net |  | 20,901 | 22,617 |
Long-term power bonds | [1] | 21,063 | 22,792 |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | 162 | 175 |
Current maturities of power bonds |  | 1,555 | 32 |
Foreign currency exchange loss |  | $ 150 | 21 |
Number of issues with partial maturities | Electronotes |  | 1 |  |
880591DS8 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Dec. 15, 2016 |  |
Coupon rate |  | 4.875% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 0 | 524 |
Electronotes |  |  |  |
Long-term debt |  |  |  |
Long-term power bonds, net | [2] | $ 278 | 325 |
Maturity date - earliest |  | May 15, 2020 |  |
Maturity date - latest |  | Feb. 15, 2043 |  |
Call date - earliest |  | Feb. 15, 2015 |  |
Call date - latest |  | Feb. 15, 2018 |  |
880591EA6 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jul. 18, 2017 |  |
Coupon rate |  | 5.50% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 0 | 1,000 |
880591CU4 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Dec. 15, 2017 |  |
Coupon rate |  | 6.25% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 650 | 650 |
880591EC2 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Apr. 01, 2018 |  |
Coupon rate |  | 4.50% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591EQ1 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Oct. 15, 2018 |  |
Coupon rate |  | 1.75% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591EL2 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Feb. 15, 2021 |  |
Coupon rate |  | 3.875% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,500 | 1,500 |
880591DC3 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 07, 2021 |  |
Coupon rate | [3] | 5.805% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 260 | 303 |
880591EN8 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Aug. 15, 2022 |  |
Coupon rate |  | 1.875% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591ER9 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Sep. 15, 2024 |  |
Coupon rate |  | 2.875% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591CJ9 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Nov. 01, 2025 |  |
Coupon rate |  | 6.75% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,350 | 1,350 |
880591300 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 01, 2028 |  |
Coupon rate |  | 3.55% |  |
Long-term debt |  |  |  |
Long-term power bonds, net | [4] | $ 273 | 274 |
880591409 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | May 01, 2029 |  |
Coupon rate |  | 3.36% |  |
Long-term debt |  |  |  |
Long-term power bonds, net | [4] | $ 232 | 232 |
880591DM1 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | May 01, 2030 |  |
Coupon rate |  | 7.125% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591DP4 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 07, 2032 |  |
Coupon rate | [3] | 6.587% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 324 | 378 |
880591DV1 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jul. 15, 2033 |  |
Coupon rate |  | 4.70% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 472 | 472 |
880591EF5 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 15, 2034 |  |
Coupon rate |  | 3.77% |  |
Long-term debt |  |  |  |
Long-term power bonds, net | [5] | $ 332 | 360 |
880591DX7 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 15, 2035 |  |
Coupon rate |  | 4.65% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 436 | 436 |
880591CK6 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Apr. 01, 2036 |  |
Coupon rate |  | 5.98% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 121 | 121 |
880591CS9 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Apr. 01, 2036 |  |
Coupon rate |  | 5.88% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,500 | 1,500 |
880591CP5 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jan. 15, 2038 |  |
Coupon rate |  | 6.15% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591ED0 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 15, 2038 |  |
Coupon rate |  | 5.50% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 500 | 500 |
880591EH1 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Sep. 15, 2039 |  |
Coupon rate |  | 5.25% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 2,000 | 2,000 |
880591EP3 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Dec. 15, 2042 |  |
Coupon rate |  | 3.50% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591DU3 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jun. 07, 2043 |  |
Coupon rate | [3] | 4.962% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 195 | 227 |
880591CF7 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jul. 15, 2045 |  |
Coupon rate |  | 6.235% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 140 | 140 |
Call date - earliest |  | Jul. 15, 2020 |  |
880591EB4 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jan. 15, 2048 |  |
Coupon rate |  | 4.875% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 500 | 500 |
880591DZ2 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Apr. 01, 2056 |  |
Coupon rate |  | 5.375% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591EJ7 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Sep. 15, 2060 |  |
Coupon rate |  | 4.625% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591ES7 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Sep. 15, 2065 |  |
Coupon rate |  | 4.25% |  |
Long-term debt |  |  |  |
Long-term power bonds, net |  | $ 1,000 | 1,000 |
880591EE8 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Nov. 15, 2015 |  |
Coupon rate |  | 2.25% |  |
Long-term debt |  |  |  |
Current maturities of power bonds |  | $ 0 | 2 |
880591EF5 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Dec. 15, 2016 |  |
Coupon rate |  | 3.77% |  |
Long-term debt |  |  |  |
Current maturities of power bonds |  | $ 28 | 27 |
88059TEL1 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Nov. 15, 2016 |  |
Coupon rate |  | 2.65% |  |
Long-term debt |  |  |  |
Current maturities of power bonds |  | $ 3 | 3 |
880591DS8 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Dec. 15, 2016 |  |
Coupon rate |  | 4.875% |  |
Long-term debt |  |  |  |
Current maturities of power bonds |  | $ 524 | 0 |
880591EA6 |  |  |  |
Debt Instrument |  |  |  |
Maturity |  | Jul. 18, 2017 |  |
Coupon rate |  | 5.50% |  |
Long-term debt |  |  |  |
Current maturities of power bonds |  | $ 1,000 | $ 0 |
Minimum | Electronotes |  |  |  |
Debt Instrument |  |  |  |
Coupon rate |  | 2.375% |  |
Maximum | Electronotes |  |  |  |
Debt Instrument |  |  |  |
Coupon rate |  | 4.375% |  |
[1] | Includes net exchange gain (loss) from currency transactions of $150 million at September 30, 2016 and $21 million at September 30, 2015.
[2] | Includes one electronotes® issue (88059TEL1) with partial maturities of principal for each required annual payment.
[3] | The coupon rate represents TVA’s effective interest rate.
[4] | TVA PARRS, CUSIP numbers 880591300 and 880591409, may be redeemed under certain conditions. See Put and Call Options above.
[5] | These Bonds include partial maturities of principal for each required annual payment.

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