XML 56 R6.htm IDEA: XBRL DOCUMENT
v3.2.0.727

CONSOLIDATED STATEMENTS OF CHANGES IN PROPRIETARY CAPITAL (UNAUDITED) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Balance at Beginning of Period | $ 6,687 | $ 5,861 | $ 6,104 | $ 5,647
Net income (loss) | 32 | (81) | 609 | 147
Total other comprehensive income (loss) | 9 | (25) | 19 | (32)
Return on power program appropriation investment | (1) | (1) | (5) | (3)
Return of power program appropriation investment |  | (2) |  | (7)
Balance at End of Period | 6,727 | 5,752 | 6,727 | 5,752
Power Program Appropriation Investment |  |  |  |
Balance at Beginning of Period | 258 | 263 | 258 | 268
Net income (loss) | 0 | 0 | 0 | 0
Total other comprehensive income (loss) | 0 | 0 | 0 | 0
Return on power program appropriation investment | 0 | 0 | 0 | 0
Return of power program appropriation investment |  | (2) |  | (7)
Balance at End of Period | 258 | 261 | 258 | 261
Power Program Retained Earnings |  |  |  |
Balance at Beginning of Period | 5,819 | 4,997 | 5,240 | 4,767
Net income (loss) | 34 | (79) | 617 | 153
Total other comprehensive income (loss) | 0 | 0 | 0 | 0
Return on power program appropriation investment | (1) | (1) | (5) | (3)
Return of power program appropriation investment |  | 0 |  | 0
Balance at End of Period | 5,852 | 4,917 | 5,852 | 4,917
Nonpower Programs Appropriation Investment, Net |  |  |  |
Balance at Beginning of Period | 595 | 605 | 601 | 609
Net income (loss) | (2) | (2) | (8) | (6)
Total other comprehensive income (loss) | 0 | 0 | 0 | 0
Return on power program appropriation investment | 0 | 0 | 0 | 0
Return of power program appropriation investment |  | 0 |  | 0
Balance at End of Period | 593 | 603 | 593 | 603
Accumulated Other Comprehensive Income (Loss) from Net Gains (Losses) on Cash Flow Hedges |  |  |  |
Balance at Beginning of Period | 15 | (4) | 5 | 3
Net income (loss) | 0 | 0 | 0 | 0
Total other comprehensive income (loss) | 9 | (25) | 19 | (32)
Return on power program appropriation investment | 0 | 0 | 0 | 0
Return of power program appropriation investment |  | 0 |  | 0
Balance at End of Period | $ 24 | $ (29) | $ 24 | $ (29)

X
- Definition Capital balance. + References No definition available. + Details
Name: | tve_Balance
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents disclosure of the cash payments from net power proceeds paid annually to the U.S. government as a return of the government's appropriation investment in the reporting entity. + References No definition available. + Details
Name: | tve_ReturnOfAppropriationInvestment
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents disclosure of the cash payments from net power proceeds paid annually to the U.S. government as a return on the government's appropriation investment in the reporting entity. + References No definition available. + Details
Name: | tve_ReturnOnAppropriationInvestment
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=51821188&loc=d3e1436-108581 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=tve_PowerProgramAppropriationInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=tve_PowerProgramRetainedEarningsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=tve_NonpowerProgramsAppropriationInvestmentNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |