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Commitments and Contingencies Commitments and Contingencies (Tables) | 12 Months Ended
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Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | At September 30, 2016, the amounts of contractual cash commitments maturing in each of the next five years and beyond are shown below:
Commitments and Contingencies Payments due in the years ending September 30
|  | 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total
Membership interests of variable interest entity subject to mandatory redemption |  | $ | 2 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | 23 |  |  | $ | 35 |
Lease obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital(1) |  | 51 |  |  | 51 |  |  | 50 |  |  | 50 |  |  | 50 |  |  | 564 |  |  | 816 |
Non-cancelable operating(2) |  | 43 |  |  | 32 |  |  | 25 |  |  | 25 |  |  | 25 |  |  | 13 |  |  | 163 |
Purchase obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power(3) |  | 254 |  |  | 265 |  |  | 266 |  |  | 246 |  |  | 244 |  |  | 1,541 |  |  | 2,816 |
Fuel(4) |  | 1,312 |  |  | 917 |  |  | 569 |  |  | 324 |  |  | 327 |  |  | 1,006 |  |  | 4,455 |
Other(5) |  | 88 |  |  | 65 |  |  | 58 |  |  | 47 |  |  | 34 |  |  | 604 |  |  | 896 |
Unfunded loan commitments |  | 9 |  |  | 4 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 13 |
Payments on other financings |  | 76 |  |  | 76 |  |  | 75 |  |  | 73 |  |  | 207 |  |  | 26 |  |  | 533 |
Total |  | $ | 1,835 |  |  | $ | 1,412 |  |  | $ | 1,045 |  |  | $ | 768 |  |  | $ | 890 |  |  | $ | 3,777 |  |  | $ | 9,727 |
Notes (1) Includes the interest component of capital leases based on the interest rates stated in the lease agreements and excludes certain related executory costs. Minimum commitments related to executory costs are included in purchase obligations. (2) Does not include purchased power agreements that are accounted for as operating leases and included in power purchase obligations. (3) Includes commitments for energy and/or capacity under power purchase agreements from coal-fired, hydroelectric, diesel, and gas-fired facilities, as well as transmission service agreements to support purchases of power from the market and wind power purchase agreements. (4) Includes commitments to purchase nuclear fuel, coal, and natural gas, as well as related transportation and storage services. (5) Primarily includes long-term service contracts, co ntracts that contain minimum purchase levels for the purchase of limestone along with related storage and transportation, and contractual obligations related to load control programs.
Energy Prepayment Obligations |
Energy Prepayment Obligations Payments due in the years ending September 30
|  | 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Thereafter |  | Total
Energy prepayment obligations |  | $ | 100 |  |  | $ | 100 |  |  | $ | 10 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 210 |
Interest payments relating to energy prepayment obligations |  | 46 |  |  | 46 |  |  | 4 |  |  | — |  |  | — |  |  | — |  |  | 96 |
Total |  | $ | 146 |  |  | $ | 146 |  |  | $ | 14 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 306 |

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
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