Name:	hafn_DisposalOfFairValueOtherComprehensiveIncomeInvestment
Namespace Prefix:	hafn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

A component of equity representing the accumulated portion of fair value gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges.

No definition available.

Name:	hafn_FairValueGainsLossesOnCashFlowHedges
Namespace Prefix:	hafn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

A component of equity representing the fair value reserves.

No definition available.

Name:	hafn_FairValueReserve
Namespace Prefix:	hafn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	hafn_FairValueReserveAbstract
Namespace Prefix:	hafn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	hafn_HedgingReserveAbstract
Namespace Prefix:	hafn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

A component of equity representing the accumulated portion of reclassification to profit or loss on a hedging instrument that is determined to be an effective hedge for cash flow hedges.

No definition available.

Name:	hafn_ReclassificationToProfitOrLoss
Namespace Prefix:	hafn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of other comprehensive income, net of tax, related to gains (losses) from changes in the fair value of investments in equity instruments that the entity has designated at fair value through other comprehensive income applying paragraph 5.7.5 of IFRS 9. [Refer: Other comprehensive income]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
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-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_7&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

A component of equity representing the accumulated portion of gain (loss) on a hedging instrument that is determined to be an effective hedge for cash flow hedges. [Refer: Cash flow hedges [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 9
-IssueDate 2025-01-01
-Paragraph 6.5.11
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2025-en-r&anchor=para_6.5.11&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_e&doctype=Standard
-URIDate 2025-03-27