XML 163 R122.htm IDEA: XBRL DOCUMENT v3.10.0.1

Commitments and Contingencies Unfunded loan commitments (Details) - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017
Legal Proceedings
Unfunded Loan Commitments	$ 3	$ 18
Energy prepayment obligations
Legal Proceedings
Prepayment Obligations	$ 10

X

- Definition

Prepayment Obligations

+ References

No definition available.

+ Details

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

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=tve_EnergyprepaymentobligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: