Convertible debt discount.

No definition available.

Name:	TRLEF_ConvertibleDebtDiscount
Namespace Prefix:	TRLEF_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt conversion price.

+ References

No definition available.

+ Details

Name:	TRLEF_DebtConversionPrice
Namespace Prefix:	TRLEF_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price.

+ References

No definition available.

+ Details

Name:	TRLEF_ExercisePrice
Namespace Prefix:	TRLEF_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	TRLEF_IfrsStatementLineItems
Namespace Prefix:	TRLEF_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_BorrowingsInterestRate
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_DerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_BorrowingsByNameAxis=TRLEF_UnbrokeredPrivatePlacementOfConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=TRLEF_ConvertibleDebentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Convertible Debentures (Details Narrative)	Dec. 31, 2022	Mar. 30, 2021 USD ($) $ / shares	Mar. 30, 2021 CAD ($) $ / shares	Jul. 01, 2020 $ / shares	Jul. 01, 2020 $ / shares	Sep. 30, 2019 USD ($) $ / shares	Sep. 30, 2019 CAD ($) $ / shares
IfrsStatementLineItems [Line Items]
Borrowings, interest rate	11.82%
Unbrokered private placement of convertible debt [member]
IfrsStatementLineItems [Line Items]
Notional amount						$ 123,095	$ 163,000
Borrowings, interest rate						10.00%	10.00%
Exercise price \| (per share)						$ 0.20	$ 0.25
Debt conversion price \| (per share)						$ 0.12	$ 0.15
Derivative liability						$ 81,956
Convertible debt discount						$ 81,956
Convertible debenture [member]
IfrsStatementLineItems [Line Items]
Notional amount		$ 118,726	$ 150,000
Exercise price \| (per share)				$ 0.09	$ 0.12
Debt conversion price \| (per share)		$ 0.06	$ 0.075	$ 0.06	$ 0.075