XML 95 R66.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Fair Value Measurements Fair Value Measurements (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Investments |  |  |  |
Equity securities | $ 189 |  | $ 166 |
Debt Instruments |  |  |  |
U.S. government corporations and agencies | 116 |  | 234 |
Corporate debt securities | 341 |  | 225 |
Residential mortgage-backed securities | 13 |  | 17 |
Commercial mortgage-backed securities | 7 |  | 7 |
Collateralized debt obligations | 32 |  | 29 |
Institutional mutual funds | 83 |  | 91 |
Forward debt securities contracts | 14 |  | (59) |
Private partnerships measured at net asset value | 246 | [1] | 240 | [2]
Commingled funds measured at net asset value | 1,084 | [1] | 1,061 | [2]
Total investments | 2,125 |  | 2,011 |
Currency swap(s) | 0 | [3] | 25 | [4]
Commodity contract derivatives | 12 |  | 1 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | 2,137 |  | 2,037 |
Liabilities |  |  |  |
Currency swap(s) | 167 | [3] | 47 | [4]
Interest rate swaps | 1,912 |  | 1,627 |
Commodity contract derivatives | 189 |  | 98 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 11 | [3] | 27 | [4]
Total | 2,279 |  | 1,799 |
Fair Value, Inputs, Level 1 |  |  |  |
Investments |  |  |  |
Equity securities | 189 |  | 166 |
Debt Instruments |  |  |  |
U.S. government corporations and agencies | 83 |  | 203 |
Corporate debt securities | 0 |  | 0 |
Residential mortgage-backed securities | 0 |  | 0 |
Commercial mortgage-backed securities | 0 |  | 0 |
Collateralized debt obligations | 0 |  | 0 |
Institutional mutual funds | 83 |  | 91 |
Forward debt securities contracts | 0 |  | 0 |
Private partnerships measured at net asset value | 0 | [1] | 0 | [2]
Commingled funds measured at net asset value | 0 | [1] | 0 | [2]
Total investments | 355 |  | 460 |
Currency swap(s) | 0 | [3] | 0 | [4]
Commodity contract derivatives | 0 |  | 0 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | 355 |  | 460 |
Liabilities |  |  |  |
Currency swap(s) | 0 | [3] | 0 | [4]
Interest rate swaps | 0 |  | 0 |
Commodity contract derivatives | 0 |  | 0 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | 0 |  | 0 |
Fair Value, Inputs, Level 2 |  |  |  |
Investments |  |  |  |
Equity securities | 0 |  | 0 |
Debt Instruments |  |  |  |
U.S. government corporations and agencies | 33 |  | 31 |
Corporate debt securities | 341 |  | 225 |
Residential mortgage-backed securities | 13 |  | 17 |
Commercial mortgage-backed securities | 7 |  | 7 |
Collateralized debt obligations | 32 |  | 29 |
Institutional mutual funds | 0 |  | 0 |
Forward debt securities contracts |  |  | (59) |
Forward Contract Derivative Asset, at Fair Value | 14 |  |  |
Private partnerships measured at net asset value | 0 | [1] | 0 | [2]
Commingled funds measured at net asset value | 0 | [1] | 0 | [2]
Total investments | 440 |  | 250 |
Currency swap(s) | 0 | [3] | 25 | [4]
Commodity contract derivatives | 12 |  | 1 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | 452 |  | 276 |
Liabilities |  |  |  |
Currency swap(s) | 167 | [3] | 47 | [4]
Interest rate swaps | 1,912 |  | 1,627 |
Commodity contract derivatives | 6 |  | 0 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 11 | [3] | 27 | [4]
Total | 2,096 |  | 1,701 |
Fair Value, Inputs, Level 3 |  |  |  |
Investments |  |  |  |
Equity securities | 0 |  | 0 |
Debt Instruments |  |  |  |
U.S. government corporations and agencies | 0 |  | 0 |
Corporate debt securities | 0 |  | 0 |
Residential mortgage-backed securities | 0 |  | 0 |
Commercial mortgage-backed securities | 0 |  | 0 |
Collateralized debt obligations | 0 |  | 0 |
Institutional mutual funds | 0 |  | 0 |
Forward debt securities contracts | 0 |  | 0 |
Private partnerships measured at net asset value | 0 | [1] | 0 | [2]
Commingled funds measured at net asset value | 0 | [1] | 0 | [2]
Total investments | 0 |  | 0 |
Currency swap(s) | 0 | [3] | 0 | [4]
Commodity contract derivatives | 0 |  | 0 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | 0 |  | 0 |
Liabilities |  |  |  |
Currency swap(s) | 0 | [3] | 0 | [4]
Interest rate swaps | 0 |  | 0 |
Commodity contract derivatives | 183 |  | 98 |
Commodity derivatives under FTP |  |  |  |
Swap contracts | 0 | [3] | 0 | [4]
Total | $ 183 |  | $ 98 |
[1] | Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheets.
[2] | Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheets.
[3] | Due to the right of setoff and method of settlement, TVA elects to record commodity derivatives under the FTP based on its net commodity position with the counterparty or FCM. Deposits are made to TVA's margin cash accounts held with each FCM to offset any net liability positions in full for derivatives that are transacted with FCMs. TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 12 — Offsetting of Derivative Assets and Liabilities.
[4] | Due to the right of setoff and method of settlement, TVA elects to record commodity derivatives under the FTP based on its net commodity position with the counterparty or FCM. Deposits are made to TVA's margin cash accounts held with each FCM to offset any net liability positions in full for derivatives that are transacted with FCMs. TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 12 — Offsetting of Derivative Assets and Liabilities.

X
- Definition The fair value measurements of investment funds comprised of multiple individual financial instruments that are measured at net asset value + References No definition available. + Details
Name: | tve_Commingledfundsmeasuredatnetassetvalue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of firm obligations in physical commodity contracts (for example, agricultural products, metals and energy). + References No definition available. + Details
Name: | tve_Commoditycontractderivativeliabilitiesfairvaluedisclosure
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Derivative Assets Under FTP [Abstract] + References No definition available. + Details
Name: | tve_DerivativeAssetsUnderFTPAbstract
Namespace Prefix: | tve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivatives Under FTP [Abstract] + References No definition available. + Details
Name: | tve_DerivativesUnderFtpAbstract
Namespace Prefix: | tve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value as of the balance sheet date of firm holdings in mortgages, commercial mortgage backed securities (investment instruments that represent ownership of an undivided interest in a group of mortgages, where principal and interest from the individual mortgages are used to pay investors' principal and interest on the mortgage backed security) and asset-backed securities that are primarily paid from the cash flows of a discrete pool of receivables or other financial assets (such as credit-card receivables), either fixed or revolving, that by their terms convert into cash within a finite time period. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References No definition available. + Details
Name: | tve_FinancialInstrumentsOwnedMortgagesCommercialMortgagebackedandAssetbackedSecuritiesatFairValue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of firm holdings in mortgages, residential mortgage backed securities (investment instruments that represent ownership of an undivided interest in a group of mortgages, where principal and interest from the individual mortgages are used to pay investors' principal and interest on the mortgage backed security) and asset-backed securities that are primarily paid from the cash flows of a discrete pool of receivables or other financial assets (such as credit-card receivables), either fixed or revolving, that by their terms convert into cash within a finite time period. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References No definition available. + Details
Name: | tve_FinancialInstrumentsOwnedMortgagesResidentialMortgagebackedandAssetbackedSecuritiesatFairValue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of forward contract derivative assets. + References No definition available. + Details
Name: | tve_ForwardContractDerivativeAssetatFairValue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of forward contract derivative liabilities + References No definition available. + Details
Name: | tve_ForwardContractDerivativeLiabilityatFairValue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value measurements of institutional mutual funds that are classified based on their existing investment portfolio as of the measurement date. + References No definition available. + Details
Name: | tve_Institutionalmutualfunds
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of derivative asset instruments whose primary underlying risks are not otherwise detailed in this disclosure. + References No definition available. + Details
Name: | tve_Otherassetcontracts
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of derivative liability instruments whose primary underlying risks are not otherwise detailed in this disclosure. + References No definition available. + Details
Name: | tve_Otherliabilitycontracts
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value measurements of private partnerships measured at net asset value. Private partnership investments may include holdings of investments in private real estate, venture capital, buyout, mezzanine or subordinated debt, restructuring or distressed debt, and special situations through funds management by third-party managers. + References No definition available. + Details
Name: | tve_Privatepartnershipsmeasuredatnetassetvalue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trading securities owned and collateralized by a pool of assets. + References No definition available. + Details
Name: | tve_TradingSecuritiesCollateralizedDebtObligationsatFairValue
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DebtInstrumentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of firm holdings in corporate fixed income securities. Includes pledged and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
Name: | us-gaap_FinancialInstrumentsOwnedCorporateDebtAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of firm holdings in physical commodity contracts (for example, agricultural products, metals and energy). Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References No definition available. + Details
Name: | us-gaap_FinancialInstrumentsOwnedPhysicalCommoditiesAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
Name: | us-gaap_FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps. + References No definition available. + Details
Name: | us-gaap_ForeignCurrencyContractAssetFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
Name: | us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
Name: | us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + 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(12)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: 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(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: 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(6)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 Reference 6: 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(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 8: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 + Details
Name: | us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of investments in trading equity securities and other forms of trading securities that provide ownership interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: 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.(a),1(b)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
Name: | us-gaap_TradingSecuritiesEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |