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The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2022-03-24
-Paragraph 86
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2022-03-24

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

The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2022-03-24
-Paragraph 84
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2022-en-r&anchor=para_84_c&doctype=Standard
-URIDate 2022-03-24

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Amount claimed by plaintiff in legal matter.

No definition available.

Name:	nwg_AmountOfLegalClaim
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Balance Type:	credit
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Amount of legal claim quantified by High court appeal to the court of appeal.

No definition available.

Name:	nwg_AmountOfLegalClaimQuantifiedToAppeal
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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The amount of disputed transaction value

No definition available.

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

Funds received and paid out, subject to alleged breach of fiduciary duties and lack of due diligence

No definition available.

Name:	nwg_FundsReceivedAndPaidOutSubjectToAllegedBreachOfFiduciaryDutiesAndLackOfDueDiligence
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Number of plaintiffs that have filed claims pertaining to a loss contingency.

No definition available.

Name:	nwg_IfrsLossContingencyNumberOfPlaintiffs
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Data Type:	xbrli:integerItemType
Balance Type:	na
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The amount of cash outflow reducing the contingent liability.

No definition available.

Name:	nwg_LitigationSettlementPaid
Namespace Prefix:	nwg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The number of applications for opt-out collective proceedings.

No definition available.

Name:	nwg_NumberOfApplicationsForOptOutCollectiveProceedings
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of banks for which claims have been dropped

No definition available.

Name:	nwg_NumberOfBanksForWhichClaimsHaveBeenDropped
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of class action lawsuits in a legal case.

No definition available.

Name:	nwg_NumberOfClassActionLawsuits
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
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Number of failed US banks on behalf of these US Federal Deposit Insurance Corporation served claim.

No definition available.

Name:	nwg_NumberOfFailedUsBanksServedClaim
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
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The number of motions filed to certify foreign currency related class action lawsuits.

No definition available.

Name:	nwg_NumberOfMotionsToCertifyFxRelatedClassActions
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of non-class action.

No definition available.

Name:	nwg_NumberOfNonClassAction
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of other parties that are subject to lawsuit or legal investigation, excluding the reporting entity.

No definition available.

Name:	nwg_NumberOfOtherPartiesSubjectToLawsuitOrLegalInvestigation
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of pending motions in a legal case

No definition available.

Name:	nwg_NumberOfPendingMotions
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of remaining claimant banks

No definition available.

Name:	nwg_NumberOfRemainingClaimantBanks
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The number of securities frauds.

No definition available.

Name:	nwg_NumberOfSecuritiesFrauds
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of swap execution facilities.

No definition available.

Name:	nwg_NumberOfSwapExecutionFacilities
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of wire fraud.

No definition available.

Name:	nwg_NumberOfWireFraud
Namespace Prefix:	nwg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of years probation.

No definition available.

Name:	nwg_NumberOfYearsProbation
Namespace Prefix:	nwg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of payments made for value added tax assessments.

No definition available.

Name:	nwg_PaymentsForValueAddedTaxAssessments
Namespace Prefix:	nwg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Period during which entity is suspected of fraudulent trading

No definition available.

Name:	nwg_PeriodDuringWhichEntityIsSuspectedOfFraudulentTrading
Namespace Prefix:	nwg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

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The amount of VAT that the counterparty claims that the entity is liable to pay after the tax assessment.

No definition available.

Name:	nwg_UnpaidVatAfterTaxAssessmentAmountClaimed
Namespace Prefix:	nwg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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Namespace Prefix:
Data Type:	na
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Name:	nwg_InvestigationAuthoritiesAxis=nwg_UsInvestigationsRelatingToFixedIncomeSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	nwg_InvestigationAuthoritiesAxis=nwg_FederalDepositInsuranceCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfProvisionsAxis=nwg_LitigationAndRegulatoryMattersMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=ifrs-full_ContingentLiabilityForGuaranteesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingLondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OtherLiborCasesMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingFxAntitrustLitigationMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_FederalCourtOfAustraliaFxAntitrustLitigationMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_UkCompetitionAppealTribunalMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_TelAvivDistrictCourtFxAntitrustLitigationsMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingInterestRateSwapsAntitrustLitigationMember
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Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingMadoffLitigationMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_EuaTradingLitigationMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OnemdbLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OffshoringVatAssessmentsMember
Namespace Prefix:
Data Type:	na
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