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Other Long-Term Assets (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018
--- | --- | --- | ---
Other Long-Term Assets |  |  |
EnergyRight® receivables |  | $ 112 | $ 109
Other long-term assets | $ 373 | 362 |
Other long-term assets |  |  |
Other Long-Term Assets |  |  |
Loans and other long-term receivables, net(1) | 136 | 125 |
EnergyRight® receivables | 88 | 90 |
Prepaid capacity payments | 25 | 27 |
Commodity contract derivative assets | 27 | 31 |
Other | 74 | 66 |
Restricted Cash and Cash Equivalents, Noncurrent | 23 | $ 23 |
Accounts Receivable |  |  |
Other Long-Term Assets |  |  |
EnergyRight® receivables | $ 22 |  |

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- Definition Carrying amount as of the balance sheet date of the asset 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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