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Note 11. Investments in Unconsolidated Entities - Summary of Investments in Unconsolidated Entities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of unconsolidated structured entities [line items]
Carrying amount of Financial asset	$ 258,300	$ 253,300
OPay Digital Services Limited [member]
Disclosure of unconsolidated structured entities [line items]
Ownership interest	9.40%
Carrying amount of Financial asset	$ 258,300	253,300
Verda Ventures [Member]
Disclosure of unconsolidated structured entities [line items]
Ownership interest	26.00%
Carrying amount of Associate	$ 1,248	0
nHorizon [member]
Disclosure of unconsolidated structured entities [line items]
Ownership interest	29.10%
Carrying amount of Associate	$ 0	$ 0

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of investments in associates in an entity's separate financial statements. [Refer: Total for all associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 10
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_10&doctype=Standard
-URIDate 2024-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Investments in financial asset of fair value through profit or loss about long-term investments.

+ References

No definition available.

+ Details

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Namespace Prefix:	opra_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

- Definition

The proportion of carrying amount ownership interest in associate.

+ References

No definition available.

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- Details

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X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=opra_VerdaVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: