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Gallatin Coal Combustion Residual Facilities (Details) - USD ($)	9 Months Ended
	Jun. 30, 2019	Sep. 30, 2018
Other Long-Term Liabilities
Asset Retirement Obligation, Environmental Remediation	$ 667,000,000
Current regulatory assets	183,000,000	$ 414,000,000
TDEC civil penalties related to Gallatin	900,000,000
Plaintiff civil penalties related to Gallatin	37,500
Gallatin coal combustion residual facilities estimated cost relocate onsite	900,000,000
Other long-term liabilities
Other Long-Term Liabilities
Gallatin coal combustion residual facilities	0	$ 862,000,000
Non-nuclear
Other Long-Term Liabilities
Asset Retirement Obligation, Environmental Remediation	$ 667,000,000

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Asset Retirement Obligation, Environmental Remediation

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Gallatin coal combustion residual facilities estimated cost to relocate onsite

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The amount per day the plaintiffs in the Gallatin Fossil Plant CCR cases are seeking for violations related to the TN Water Quality Control Act and TN Solid Waste Disposal Act.

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The amount per day TDEC is seeking for each day TVA is found to have violated the statutes related to the TN Water Quality Control Act and TN Solid Waste Disposal Act in relation to Gallatin Fossil Plant.

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Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

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-SubTopic 10
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Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.

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