XML 165 R77.htm IDEA: XBRL DOCUMENT v3.22.2.2

Debt and Other Obligations Debt and Other Obligations - Lease/Leasebacks (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Lease/Leasebacks [Abstract]
CT and QTE outstanding leaseback obligation		$ 25
Kemper/Lagoon Creek Leasehold Interests
Variable Interest Entities
Leasehold Interests	$ 155

X

- Definition

The outstanding leaseback obligations related to combustion turbine units and qualified technological equipment and software.

+ References

No definition available.

+ Details

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

X

- Definition

Lease/Leasebacks [Abstract]

+ References

No definition available.

+ Details

Name:	tve_LeaseLeasebacksAbstract
Namespace Prefix:	tve_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Leasehold Interests

+ References

No definition available.

+ Details

Name:	tve_LeaseholdInterests
Namespace Prefix:	tve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

X

- Details

Name:	us-gaap_EquityInterestIssuedOrIssuableByTypeAxis=tve_KemperLagoonCreekLeaseholdInterestsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: