XML 135 R49.htm IDEA: XBRL DOCUMENT v3.20.2

Proprietary Capital (Tables)

12 Months Ended

Sep. 30, 2020

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated Other Comprehensive Income (Loss)

The items included in AOCI consist of market valuation adjustments for certain derivative instruments.  See Note 15 — Risk Management Activities and Derivative Transactions.

Stockholders' Equity Note [Abstract]

Summary of Proprietary Capital Activity

The table below summarizes TVA's activities related to appropriated funds and retained earnings.

Summary of Proprietary Capital Activity At or for the years ended September 30
			2020												2019
			Power Program						Nonpower  Programs						Power Program						Nonpower  Programs
Appropriation Investment			$	258					$	4,351					$	258					$	4,351
Proprietary Capital
Balance at beginning of year			10,823						(3,795)						9,404						(3,787)
Net income (loss) for year			1,360						(8)						1,425						(8)
Return on power program appropriation investment			(6)						—						(6)						—
Balance at end of year			12,177						(3,803)						10,823						(3,795)
Net proprietary capital at September 30			$	12,435					$	548					$	11,081					$	556

X

- Definition

Tabular disclosure of changes in components of proprietary capital including net income, return of investment and return on investment by program

+ References

No definition available.

+ Details

Name:	tve_SummaryOfProprietaryCapitalActivityTableTextBlock
Namespace Prefix:	tve_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

+ Details

Name:	us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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