XML 25 R70.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value Measurements Estimated Values of Financial Instruments Not Recorded at Fair Value (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Aug. 09, 2013
Estimated Values of Financial Intruments Not Recorded at Fair Value
EnergyRight receivables	$ 166us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	$ 166us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount
Long-term Investments and Receivables, Net	92us-gaap_NotesReceivableNet	81us-gaap_NotesReceivableNet
EnergyRight® purchase obligation	215us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount	215us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
Unfunded Loan Commitments	15tve_UnfundedLoanCommitments	18tve_UnfundedLoanCommitments
Membership interest of variable interest entity subject to mandatory redemption (including current portion)	50us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount	50us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount	40us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount
Long-term outstanding power bonds (including current maturities), net	27,462us-gaap_UnsecuredDebt	26,889us-gaap_UnsecuredDebt
Long-term debt of variable interest entities (including current maturities)	1,475us-gaap_OtherLongTermDebt	1,425us-gaap_OtherLongTermDebt
Carrying Value
Estimated Values of Financial Intruments Not Recorded at Fair Value
EnergyRight receivables	158us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	156us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Long-term Investments and Receivables, Net	108us-gaap_NotesReceivableNet / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	92us-gaap_NotesReceivableNet / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
EnergyRight® purchase obligation	191us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	190us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Unfunded Loan Commitments	0tve_UnfundedLoanCommitments / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	0tve_UnfundedLoanCommitments / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Membership interest of variable interest entity subject to mandatory redemption (including current portion)	39us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	39us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Long-term outstanding power bonds (including current maturities), net	22,940us-gaap_UnsecuredDebt / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	22,980us-gaap_UnsecuredDebt / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Long-term debt of variable interest entities (including current maturities)	$ 1,311us-gaap_OtherLongTermDebt / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember	$ 1,311us-gaap_OtherLongTermDebt / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember

X

- Definition

An unfunded loan commitment is typically a letter from a lending institution to a borrower detailing out the germane terms of a loan that the lender is binding itself to (amount, rate, term, collateral, etc). It is a binding contract on the part of the lender if the borrower accepts the terms of the commitment. They usually are only binding for a short period of time.

+ References

No definition available.

+ Details

Name:	tve_UnfundedLoanCommitments
Namespace Prefix:	tve_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

+ Details

Name:	us-gaap_NotesReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

+ Details

Name:	us-gaap_OtherLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount that would be paid, determined under the conditions specified in the contract, if the holder of the share has the right to redeem the shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879

+ Details

Name:	us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount of financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729

+ Details

Name:	us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729

+ Details

Name:	us-gaap_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Article 5

-Subsection 19, 20, 22

+ Details

Name:	us-gaap_UnsecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_PortionAtOtherThanFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: