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The amount of residual interest in the assets of the entity after deducting all its liabilities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 1
-IssueDate 2024-01-01
-Paragraph 24
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_a&doctype=Standard
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
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-URIDate 2024-03-27

Name:	ifrs-full_Equity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The increase (decrease) in equity resulting from the exercise of options.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
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-URIDate 2024-03-27

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The number of share options exercised in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 45
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-URIDate 2024-03-27

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

The number of shares issued by the entity, for which full payment has been received.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_ii&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_NumberOfSharesIssuedAndFullyPaid
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Increase decrease in share capital from share issuance.

No definition available.

Name:	ncna_IncreaseDecreaseInShareCapitalFromShareIssuance
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase decrease in share capital from warrants exercised.

No definition available.

Name:	ncna_IncreaseDecreaseInShareCapitalFromWarrantsExercised
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase decrease in shares from share issuance.

No definition available.

Name:	ncna_IncreaseDecreaseInSharesFromShareIssuance
Namespace Prefix:	ncna_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Increase decrease in shares from warrants exercised.

No definition available.

Name:	ncna_IncreaseDecreaseInSharesFromWarrantsExercised
Namespace Prefix:	ncna_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of share capital before subdivision.

No definition available.

Name:	ncna_NumberOfShareCapitalBeforeSubdivision
Namespace Prefix:	ncna_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of shares issued during the period.

No definition available.

Name:	ncna_NumberOfSharesIssuedDuringThePeriod
Namespace Prefix:	ncna_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Share capital before subdivision.

No definition available.

Name:	ncna_ShareCapitalBeforeSubdivision
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Share capital subdivision and reclassification of share capital.

No definition available.

Name:	ncna_ShareCapitalSubdivisionAndReclassificationOfShareCapital
Namespace Prefix:	ncna_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Share issuance costs.

No definition available.

Name:	ncna_ShareIssuanceCosts
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Share issue expenses.

No definition available.

Name:	ncna_ShareIssueExpenses
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Value of share capital subdivision and reclassification of share capital.

No definition available.

Name:	ncna_ValueOfShareCapitalSubdivisionAndReclassificationOfShareCapital
Namespace Prefix:	ncna_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Value of shares issued during the period.

No definition available.