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

Investor relations expense.

No definition available.

Name:	TRLEF_InvestorRelationsExpense
Namespace Prefix:	TRLEF_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Office expense.

No definition available.

Name:	TRLEF_OfficeExpense
Namespace Prefix:	TRLEF_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of expense arising from advertising.

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

Name:	ifrs-full_AdvertisingExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of bank and similar charges recognised by the entity as an expense.

Name:	ifrs-full_BankAndSimilarCharges
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of expense relating to general and administrative activities of the entity.

Name:	ifrs-full_GeneralAndAdministrativeExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of fees paid or payable for professional services.

Name:	ifrs-full_ProfessionalFeesExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of expense arising from travel.

Name:	ifrs-full_TravelExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of expense arising from purchased utilities.

Name:	ifrs-full_UtilitiesExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

A class of employee benefits expense that represents wages and salaries. [Refer: Employee benefits expense]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 9
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_9&doctype=Standard
-URIDate 2022-03-24