XML 22 R71.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Legal Proceedings Legal Proceedings (Details) (USD $) |  |  |  | 1 Months Ended |  |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 Legal_actions appealed_findings | Oct. 31, 2007 reactors | Mar. 31, 2013 General | Apr. 30, 2011 Environmental Agreements Groups Agreements | Jun. 30, 2011 Environmental Agreements Megawatts Units | Mar. 31, 2013 Kingston Ash Spill Legal_actions | Jun. 30, 2010 Kingston Ash Spill Years | Sep. 30, 2010 Case Involving Tennessee Valley Authority Retirement System | Mar. 31, 2010 Case Involving Tennessee Valley Authority Retirement System People | Apr. 30, 2006 Case Arising out of Hurricane Katrina People Companies | Aug. 31, 2011 Administrative Proceedings Regarding Bellefonte Units 3 and 4 | Jun. 30, 2008 Administrative Proceedings Regarding Bellefonte Units 3 and 4 Legal_actions | Nov. 30, 2009 Administrative Proceedings Regarding Watts Bar Nuclear Plant Unit 2 People Legal_actions | Dec. 31, 2011 Petitions Resulting from Japanese Nuclear Events Legal_actions | Aug. 31, 2011 Petitions Resulting from Japanese Nuclear Events Legal_actions | Jun. 30, 2012 Case Involving the NRC Waste Confidence Decision on Spent Nuclear Fuel Storage
Legal Proceedings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal loss contingency accrual |  |  | $ 340,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Portion of legal loss contingency included in other long-term liabilities |  |  | 226,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Portion of legal loss contingency included in accounts payable and accrued liabilities |  |  | 104,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Portion of legal loss contingency included in regulatory assets |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of similar environmental agreements entered into |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Number of environmental agreements entered into with the EPA |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Number of environmental agreements entered into with Alabama, Kentucky, North Carolina, and Tennessee |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Number of environmental agreements entered into with environmental advocacy groups |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |
Number of units to be idled |  |  |  |  | 18 |  |  |  |  |  |  |  |  |  |  |
Megawatts option 1 |  |  |  |  | 2,200 |  |  |  |  |  |  |  |  |  |  |
Megawatts option 2 |  |  |  |  | 3,500 |  |  |  |  |  |  |  |  |  |  |
Amount to be invested in certain TVA environmental projects |  |  |  |  | 290,000,000 |  |  |  |  |  |  |  |  |  |  |
Amount to be provided to fund environmental projects |  |  |  |  | 60,000,000 |  |  |  |  |  |  |  |  |  |  |
Amount to pay civil penalties |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed |  |  |  |  |  | 78 |  |  |  |  |  |  |  |  |  |
Number of lawsuits dismissed |  |  |  |  |  | 15 |  |  |  |  |  |  |  |  |  |
Number of active lawsuits |  |  |  |  |  | 63 |  |  |  |  |  |  |  |  |  |
Number of cases that received a bench trial |  |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |
Number of remaining cases |  |  |  |  |  | 56 |  |  |  |  |  |  |  |  |  |
Length of time to complete mediation | 120 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended time to complete mediation | 120 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits filed under various environmental statutes | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Civil penalty order issued June 1, 2010 |  |  |  |  |  |  | 12,000,000 |  |  |  |  |  |  |  |  |
Amount of civil penalty order satisfied |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |
Credit against civil penalty order |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |
Down payment on natural resource damages |  |  |  |  |  |  | $ 250,000 |  |  |  |  |  |  |  |  |
Number of years to pay for natural resource damages |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |
Number of participants that filed suit |  |  |  |  |  |  |  |  | 8 |  |  |  |  |  |  |
Number of TVARS Board members |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |
Number of defendants that filed a motion to dismiss |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |
Number of individual defendants |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |
Remaining defendant |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Number of days to file an ammended complaint |  |  |  |  |  |  |  | 14 days |  |  |  |  |  |  |  |
Number of Mississippi residents allegedly injured |  |  |  |  |  |  |  |  |  | 14 |  |  |  |  |  |
Number of large oil companies sued |  |  |  |  |  |  |  |  |  | 7 |  |  |  |  |  |
Number of oil company trade associations sued |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
Number of large chemical companies sued |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Number of chemical trade associations sued |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
Number of large companies sued |  |  |  |  |  |  |  |  |  | 31 |  |  |  |  |  |
Number of years that spent fuel can be stored after a plant's license is terminated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 years
Number of nuclear reactors |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of admitted contentions submitted by BREDL and SACE |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |
Number of contentions submitted by BREDL and SACE |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |
Number of contentions no longer admitted |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Number of contentions left |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Number of contentions admitted for hearing |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Number of SACE contentions |  |  |  |  |  |  |  |  |  |  | 1 |  | 7 |  |  |
Number of other petitioners |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |
Number of contentions dismissed |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
Number of contentions remaining |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
Number of appealed findings | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of requests accepted by the NRC |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |
Number of separate petitions filed by the Natural Resources Defense Council |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 |

X
- Definition The amount of the civil penalty order that has been satisfied. + References No definition available. + Details
Name: | tve_AmountOfCivilPenaltyOrderSatisfied
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount to be invested in certain environmental projects + References No definition available. + Details
Name: | tve_AmountToBeInvestedInCertainEnvironmentalProjects
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount to be provided to fund environmental projects in Alabama, Kentucky, North Carolina, and Tennessee + References No definition available. + Details
Name: | tve_AmountToBeProvidedToFundEnvironmentalProjects
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount to pay civil penalties + References No definition available. + Details
Name: | tve_AmountToPayCivilPenalties
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Civil penalty order issued by TDEC for the Kingston ash spill citing violations of the Tennessee Solid Waste Disposal Act and the Tennessee Water Control Quality Act. + References No definition available. + Details
Name: | tve_CivilPenaltyOrderIssuedJune12010
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of credit against the civil penalty order that was received for environmental projects. + References No definition available. + Details
Name: | tve_CreditAgainstCivilPenaltyOrder
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition A down payment on natural resource damages paid each year for three years. + References No definition available. + Details
Name: | tve_DownPaymentOnNaturalResourceDamages
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The extended length of time given to complete mediation + References No definition available. + Details
Name: | tve_ExtendedTimeToCompleteMediation
Namespace Prefix: | tve_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | instant

X
- Definition The length of time given to complete mediation. + References No definition available. + Details
Name: | tve_LengthOfTimeToCompleteMediation
Namespace Prefix: | tve_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | instant

X
- Definition Megawatts of summer net capability + References No definition available. + Details
Name: | tve_Megawatts
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Megawatts option 2 + References No definition available. + Details
Name: | tve_MegawattsOption2
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of admitted contentions submitted by BREDL and SACE + References No definition available. + Details
Name: | tve_NumberOfAdmittedContentionsSubmittedByBredlAndSace
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of appealed findings. + References No definition available. + Details
Name: | tve_NumberOfAppealedFindings
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of board members + References No definition available. + Details
Name: | tve_NumberOfBoardMembers
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of cases related to the Kingston Ash Spill that received a bench trial on the issue of dike failure causation. + References No definition available. + Details
Name: | tve_NumberOfCasesThatReceivedBenchTrial
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of chemical trade associations sued + References No definition available. + Details
Name: | tve_NumberOfChemicalTradeAssociationsSued
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions admitted for hearing + References No definition available. + Details
Name: | tve_NumberOfContentionsAdmittedForHearing
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions dismissed + References No definition available. + Details
Name: | tve_NumberOfContentionsDismissed
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions left + References No definition available. + Details
Name: | tve_NumberOfContentionsLeft
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions no longer admitted + References No definition available. + Details
Name: | tve_NumberOfContentionsNoLongerAdmitted
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions remaining + References No definition available. + Details
Name: | tve_NumberOfContentionsRemaining
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of contentions submitted by BREDL and SACE + References No definition available. + Details
Name: | tve_NumberOfContentionsSubmittedByBredlAndSace
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of days to file an ammended complaint + References No definition available. + Details
Name: | tve_NumberOfDaysToFileAmmendedComplaint
Namespace Prefix: | tve_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of defendants that filed a motion to dismiss + References No definition available. + Details
Name: | tve_NumberOfDefendantsThatFiledMotionToDismiss
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of environmental agreements entered into with Alabama, Kentucky, North Carolina, and Tennessee + References No definition available. + Details
Name: | tve_NumberOfEnvironmentalAgreementsEnteredIntoWithAlabamaKentuckyNorthCarolinaAndTennessee
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of environmental agreements entered into with environmental advocacy groups + References No definition available. + Details
Name: | tve_NumberOfEnvironmentalAgreementsEnteredIntoWithEnvironmentalAdvocacyGroups
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of environmental agreements entered into with the EPA + References No definition available. + Details
Name: | tve_NumberOfEnvironmentalAgreementsEnteredIntoWithEpa
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of individual defendants + References No definition available. + Details
Name: | tve_NumberOfIndividualDefendants
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of large chemical companies sued + References No definition available. + Details
Name: | tve_NumberOfLargeChemicalCompaniesSued
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of large companies sued + References No definition available. + Details
Name: | tve_NumberOfLargeCompaniesSued
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of large oil companies sued + References No definition available. + Details
Name: | tve_NumberOfLargeOilCompaniesSued
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of lawsuits dismissed + References No definition available. + Details
Name: | tve_NumberOfLawsuitsDismissed
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of lawsuits filed + References No definition available. + Details
Name: | tve_NumberOfLawsuitsFiled
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of lawsuits filed by individuals and environmental groups under various environmental statutes. + References No definition available. + Details
Name: | tve_NumberOfLawsuitsFiledUnderVariousEnvironmentalStatutes
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Mississippi residents allegedly injured + References No definition available. + Details
Name: | tve_NumberOfMississippiResidentsAllegedlyInjured
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of nuclear reactors + References No definition available. + Details
Name: | tve_NumberOfNuclearReactors
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of oil company trade associations sued + References No definition available. + Details
Name: | tve_NumberOfOilCompanyTradeAssociationsSued
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of other petitioners + References No definition available. + Details
Name: | tve_NumberOfOtherPetitioners
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of participants that filed suit. + References No definition available. + Details
Name: | tve_NumberOfParticipantsThatFiledSuit
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The remaining number of cases related to the Kingston Ash Spill that are still open. + References No definition available. + Details
Name: | tve_NumberOfRemainingCases
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of requests accepted by the NRC + References No definition available. + Details
Name: | tve_NumberOfRequestsAcceptedByNrc
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of SACE contentions + References No definition available. + Details
Name: | tve_NumberOfSaceContentions
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of separate petitions filed by the Natural Resources Defense Council + References No definition available. + Details
Name: | tve_NumberOfSeparatePetitionsFiledByNaturalResourcesDefenseCouncil
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of similar environmental agreements entered into + References No definition available. + Details
Name: | tve_NumberOfSimilarEnvironmentalAgreementsEnteredInto
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of units to be idled. + References No definition available. + Details
Name: | tve_NumberOfUnitsToBeIdled
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of years that spent fuel can be stored after a plant's license is terminated + References No definition available. + Details
Name: | tve_NumberOfYearsThatSpentFuelCanBeStoredAfterPlantsLicenseIsTerminated
Namespace Prefix: | tve_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of years to pay for natural resource damages + References No definition available. + Details
Name: | tve_NumberOfYearsToPayForNaturalResourceDamages
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The portion of the legal loss accrual included in accounts payable and accrued liabilities on the balance sheet. + References No definition available. + Details
Name: | tve_PortionIncludedInAccountsPayableAndAccruedLiabilities
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The portiion of the legal loss accrual included in other long-term liabilities on the balance sheet. + References No definition available. + Details
Name: | tve_PortionIncludedInOtherLongTermLiabilities
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The portion of the legal loss accrual included in regulatory assets on the balance sheet. + References No definition available. + Details
Name: | tve_PortionIncludedInRegulatoryAssets
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Remaining defendant + References No definition available. + Details
Name: | tve_RemainingDefendant
Namespace Prefix: | tve_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount as of the balance sheet date of the combined total of loss contingency liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10, 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant