XML 204 R116.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Commitments and Contingencies Unfunded loan commitments (Details) $ in Millions | Sep. 30, 2022 USD ($)
--- | ---
Other commitments - unfunded loan commitments [Abstract] |
2019 | $ 0
2020 | $ 0

X
- Definition Other commitments - unfunded loan commitments [Abstract] + References No definition available. + Details
Name: | tve_OthercommitmentsunfundedloancommitmentsAbstract
Namespace Prefix: | tve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unfunded loan commitment due in year 2 + References No definition available. + Details
Name: | tve_Unfundedloancommitmentdueinyear2
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unfunded loan commitment due in year 3 + References No definition available. + Details
Name: | tve_Unfundedloancommitmentdueinyear3
Namespace Prefix: | tve_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant