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

The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Classes of financial instruments [domain]; Financial liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_25&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 35H
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35H&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 35M
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35M&doctype=Standard
-URIDate 2024-03-27

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 35N
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35N&doctype=Standard
-URIDate 2024-03-27

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 35I
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35I&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_FinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount claimed by plaintiff in legal matter.

No definition available.

Name:	nwg_AmountOfLegalClaim
Namespace Prefix:	nwg_
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
Namespace Prefix:	nwg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Number of branches subject to tax assessment

No definition available.

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

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
Period Type:	duration

The number of court cases that have been dismissed by courts but subsequently appealed

No definition available.

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

Number of failed US banks served claims

No definition available.

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

Number of FSPO adjudications challenged in court

No definition available.

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

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

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

Number of outstanding cases.

No definition available.

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

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 traders breached the agreement.

No definition available.

Name:	nwg_NumberOfTradersBreachedAgreement
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

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

Transaction value of investigated trades

No definition available.

Name:	nwg_TransactionValueOfInvestigatedTrades
Namespace Prefix:	nwg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

Name:	ifrs-full_ClassesOfProvisionsAxis=nwg_LondonInterbankOfferedRateLiborLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	nwg_InvestigationAuthoritiesAxis=nwg_UsInvestigationsRelatingToFixedIncomeSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	nwg_InvestigationAuthoritiesAxis=nwg_FederalDepositInsuranceCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfProvisionsAxis=nwg_LitigationAndRegulatoryMattersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OtherLiborCasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OtherIborRelatedCasesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_FederalCourtOfAustraliaFxAntitrustLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_UkCompetitionAppealTribunalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_TelAvivDistrictCourtFxAntitrustLitigationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingInterestRateSwapsAntitrustLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingSpoofingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_LegalProceedingMadoffLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OffshoringVatAssessmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_CounterpartiesAxis=nwg_HmrcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=nwg_RecoverableDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=nwg_OnemdbLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	dei_LegalEntityAxis=nwg_LegalProceedingCouttsAndCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: