NATIONAL WESTMINSTER BANK PLC /ENG/ (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 00090 - Document - Document and Entity Information Network

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 http://www.nwpc.com/role/DocumentDocumentAndEntityInformation
2 Statement [Table] Table

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 us-gaap:StatementTable
3 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
4 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
5 Ordinary shares of 1 Member ifrs-full:OrdinarySharesMember
6 Preference shares Member ifrs-full:PreferenceSharesMember
7 Series C Preference Shares Member nwpc:SeriesCPreferenceSharesMember
8 Series A Preference Shares Member nwpc:SeriesPreferenceSharesMember
9 Statement [Line Items] LineItems us-gaap:StatementLineItems
10 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
11 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
12 Document Type Concept (Submission Type) For Period dei:DocumentType
13 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
14 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
15 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
16 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
17 Entity Voluntary Filers Concept (Yes/No) For Period dei:EntityVoluntaryFilers
18 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
19 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
20 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
21 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
22 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
23 00100 - Statement - Consolidated income statement Network

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 http://www.nwpc.com/role/StatementConsolidatedIncomeStatement
24 Implied Table Table

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25 Consolidated income statement for the year Abstract us-gaap:IncomeStatementAbstract
26 Interest receivable Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
27 Interest payable Concept (Monetary) For Period Debit ifrs-full:InterestExpense
28 Net interest income Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
29 Fees and commissions receivable Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
30 Fees and commissions payable Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
31 Income from trading activities Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpense
32 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
33 Non-interest income Concept (Monetary) For Period Credit nwpc:NoninterestIncomeExpense
34 Total income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
35 Staff costs Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
36 Premises and equipment Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
37 Other administrative expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
38 Depreciation and amortisation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
39 Write down of goodwill and other intangible assets. Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
40 Operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
41 Profit before impairment (losses)/releases Concept (Monetary) For Period Credit nwpc:ProfitLossBeforeTaxAndImpairmentLossReversalOfImpairmentLoss
42 Impairment (losses)/releases Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
43 Operating profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
44 Tax charge Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
45 Profit from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
46 Loss from discontinued operations net of tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
47 Profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
48 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
49 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
50 Ordinary shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
51 Profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
52 00200 - Statement - Consolidated statement of comprehensive income Network

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 http://www.nwpc.com/role/StatementConsolidatedStatementOfComprehensiveIncome
53 Implied Table Table

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54 Consolidated statement of comprehensive income Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
55 Profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
56 Items that do not qualify for reclassification Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
57 Loss on remeasurement of retirement benefit schemes Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
58 Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
59 Total - Items that do not qualify for reclassification Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
60 Items that do qualify for reclassification Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
61 Available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
62 Cash flow hedges Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxCashFlowHedges
63 Currency translation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
64 Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
65 Total - Items that do qualify for reclassification Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
66 Other comprehensive (loss)/income after tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
67 Total comprehensive income/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
68 Attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
69 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
70 Ordinary shareholders Concept (Monetary) For Period Credit nwpc:ComprehensiveIncomeAttributableToOrdinaryEquityHoldersOfParentEntity
71 Total comprehensive income/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
72 00205 - Statement - Consolidated statement of comprehensive income (Parenthetical) Network

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73 Implied Table Table

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74 Consolidated statement of comprehensive income Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
75 Loss from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
76 00300 - Statement - Balance sheet Network

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77 Disclosure of information about consolidated structured entities [table] Table

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78 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
79 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
80 Bank Member nwpc:NationalWestminsterBankPlcMember
81 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
82 Assets Abstract ifrs-full:AssetsAbstract
83 Cash and balances at central banks Concept (Monetary) As Of Debit ifrs-full:CashAndBankBalancesAtCentralBanks
84 Amounts due from intermediate holding company and subsidiaries Concept (Monetary) As Of Debit nwpc:LoansAndAdvancesToHoldingCompanyAndSubsidiaries
85 Other loans and advances to banks Concept (Monetary) As Of Debit nwpc:OtherLoansAndAdvancesToBanks
86 Loans and advances to banks Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToBanks
87 Amounts due from subsidiaries Concept (Monetary) As Of Debit nwpc:LoansAndAdvancesToSubsidiaries
88 Other loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:ConsumerLoans
89 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
90 Debt securities subject to repurchase agreements Concept (Monetary) As Of Debit nwpc:DebtInstrumentsHeldSubjectToRepurchaseAgreement
91 Other debt securities Concept (Monetary) As Of Debit ifrs-full:OtherDebtInstrumentsHeld
92 Debt securities Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
93 Equity shares Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
94 Investments in Group undertakings Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
95 Settlement balances Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
96 Amounts due from intermediate holding company and subsidiaries Concept (Monetary) As Of Debit nwpc:DerivativeFinancialAssetsHeldByHoldingCompanyAndSubsidiaries
97 Other derivatives Concept (Monetary) As Of Debit nwpc:OtherDerivativeFinancialAssets
98 Derivatives Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
99 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
100 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
101 Deferred tax Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
102 Prepayments, accrued income and other assets Concept (Monetary) As Of Debit ifrs-full:PrepaymentsAndAccruedIncome
103 Assets of disposal groups Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
104 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
105 Liabilities Abstract ifrs-full:LiabilitiesAbstract
106 Amounts due to intermediate company and subsidiaries Concept (Monetary) As Of Credit nwpc:DepositsFromHoldingCompanyAndSubsidiaries
107 Other deposits by banks Concept (Monetary) As Of Credit nwpc:OtherDepositsFromBanks
108 Deposits by banks Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
109 Amounts due to subsidiaries Concept (Monetary) As Of Credit nwpc:BalancesOnDepositsFromSubsidiaries
110 Other customer accounts Concept (Monetary) As Of Credit ifrs-full:BalancesOnOtherDepositsFromCustomers
111 Customer accounts Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
112 Debt securities in issue Concept (Monetary) As Of Credit ifrs-full:Borrowings
113 Settlement balances Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
114 Short positions Concept (Monetary) As Of Credit nwpc:DerivativeFinancialLiabilitiesShortPosition
115 Amounts due to intermediate holding company and subsidiaries Concept (Monetary) As Of Credit nwpc:DerivativeFinancialLiabilitiesHeldByHoldingCompanyAndSubsidiaries
116 Other derivatives Concept (Monetary) As Of Credit nwpc:OtherDerivativeFinancialLiabilities
117 Derivatives Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
118 Provisions for liabilities and charges Concept (Monetary) As Of Credit ifrs-full:Provisions
119 Accruals and other liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
120 Retirement benefit liabilities Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesDefinedBenefitPlan
121 Amounts due to holding company Concept (Monetary) As Of Credit nwpc:SubordinatedLiabilitiesDueToHoldingCompany
122 Other subordinated liabilities Concept (Monetary) As Of Credit nwpc:OtherSubordinatedLiabilities
123 Subordinated liabilities Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
124 Liabilities of disposal groups Concept (Monetary) As Of Credit ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
125 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
126 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
127 Owners' equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
128 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
129 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
130 00305 - Statement - Balance sheet (Parenthetical) Network

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131 Disclosure of information about consolidated structured entities [table] Table

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132 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
133 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
134 Bank Member nwpc:NationalWestminsterBankPlcMember
135 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
136 Profit attributable to owners of equity Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
137 00400 - Statement - Statement of changes in equity Network

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138 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
139 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
140 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
141 Bank Member nwpc:NationalWestminsterBankPlcMember
142 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
143 Equity [member] Member ifrs-full:EquityMember
144 Called-up share capital Member ifrs-full:IssuedCapitalMember
145 Share premium Member ifrs-full:SharePremiumMember
146 Available-for-sale reserve Member ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
147 Cash flow hedging reserve Member ifrs-full:ReserveOfCashFlowHedgesMember
148 Foreign exchange reserve Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
149 Capital redemption reserve Member ifrs-full:CapitalRedemptionReserveMember
150 Retained earnings Member ifrs-full:RetainedEarningsMember
151 Shareholders' equity Member ifrs-full:EquityAttributableToOwnersOfParentMember
152 Non-controlling interests Member ifrs-full:NoncontrollingInterestsMember
153 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
154 Balance at beginning of the year Concept (Monetary) As Of Credit ifrs-full:Equity
155 Unrealized gains/(losses) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
156 Realised gains Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
157 Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
158 Amount recognized in equity Concept (Monetary) For Period Credit nwpc:CashFlowHedgeRecognizedInEquity
159 Amount transferred from equity to earnings Concept (Monetary) For Period Credit nwpc:IncreaseDecreaseThroughTransferOfCashFlowHedgingReserve
160 Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
161 Retranslation of net assets Concept (Monetary) For Period Credit nwpc:RetranslationOfNetAssets
162 Foreign currency losses on hedges of net assets Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationBeforeTax
163 Tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
164 Recycled to profit or loss on disposal of businesses Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInEquityOfSubsidiaries
165 Redemption of debt preference shares Concept (Monetary) For Period Credit nwpc:RedemptionOfPreferenceSharesClassifiedAsDebt
166 Profit/(Loss) attributable to ordinary shareholders and other equity owners - continuing operations Concept (Monetary) For Period Credit ifrs-full:IncomeFromContinuingOperationsAttributableToOwnersOfParent
167 Profit/(Loss) attributable to ordinary shareholders and other equity owners - discontinued operations Concept (Monetary) For Period Credit ifrs-full:IncomeFromDiscontinuedOperationsAttributableToOwnersOfParent
168 Capital contribution Concept (Monetary) For Period Credit nwpc:CapitalContributionsReceivedWithNoSharesIssued
169 Redemption of debt preference shares Concept (Monetary) For Period Debit nwpc:RedemptionOfDebtPreferenceShares
170 Loss on remeasurement of the retirement benefit schemes, gross Concept (Monetary) For Period Debit nwpc:AdjustmentsForCurtailmentsOrSettlementLossGainDefinedBenefitPlan
171 Tax amount on loss on remeasurement of the retirement benefit schemes, gross Concept (Monetary) For Period Credit nwpc:AdjustmentsForCurtailmentsOrSettlementLossGainDefinedBenefitPlanTaxAmount
172 Loss on transfer of fellow subsidiary Concept (Monetary) For Period Credit nwpc:GainLossOnTransferOfInterestInSubsidiary
173 Currency translation adjustments and other movements Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
174 Profit/(loss) attributable to non-controlling interests-continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests
175 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
176 Acquisition of business Concept (Monetary) For Period Credit nwpc:IncreaseThroughAcquisitionOfBusinessEquity
177 Equity withdrawn and disposals Concept (Monetary) For Period Credit nwpc:PaymentsToAcquireOrRedeemEntitysPaidinEquity
178 Balance at end of the year Concept (Monetary) As Of Credit ifrs-full:Equity
179 00500 - Statement - Cash flow statement Network

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180 Disclosure of information about consolidated structured entities [table] Table

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181 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
182 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
183 Bank Member nwpc:NationalWestminsterBankPlcMember
184 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
185 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
186 Operating profit/(loss) before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
187 Loss before tax from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTaxDiscontinuedOperations
188 Adjustments for non-cash items and other adjustments included within income statement Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForReconcileProfitLoss
189 Cash contribution to defined benefit pension schemes Concept (Monetary) For Period Credit nwpc:PaymentsForContributionsToDefinedBenefitPlan
190 Changes in operating assets and liabilities Concept (Monetary) For Period Credit nwpc:IncreaseDecreaseInOperatingAssetsAndLiabilitiesNet
191 Income taxes (paid)/received Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
192 Net cash flows from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
193 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
194 Sale and maturity of securities Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
195 Purchase of securities Concept (Monetary) For Period Credit ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities
196 Sale of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
197 Purchase of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
198 Net investment in business interests and intangible assets Concept (Monetary) For Period Credit nwpc:CashFlowsFromUsedInInvestmentDivestmentOfBusinessInterestsAndIntangibleAssets
199 Net cash flows from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
200 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
201 Issue of subordinated liabilities Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfSubordinatedLiabilities
202 Capital contribution Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
203 Redemption of non-controlling interests Concept (Monetary) For Period Credit nwpc:RepaymentsToNonControllingInterests
204 Redemption of subordinated liabilities Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfSubordinatedLiabilities
205 Redemption of preference shares Concept (Monetary) For Period Credit nwpc:RepaymentsOfPreferenceShares
206 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
207 Interest on subordinated liabilities Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsFinancingActivities
208 Net cash flows from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
209 Effects of exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
210 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
211 Cash and cash equivalents at beginning of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
212 Cash and cash equivalents at end of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
213 10001 - Disclosure - Accounting policies Network

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214 Implied Table Table

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215 Accounting policies Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
216 Accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
217 10101 - Disclosure - Net interest income Network

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218 Implied Table Table

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219 Net interest income Abstract nwpc:DisclosureOfInterestIncomeAndInterestExpenseAbstract
220 Net interest income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExpenseExplanatory
221 10201 - Disclosure - Non-interest income Network

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222 Implied Table Table

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224 Non-interest income Concept (Text Block (HTML)) For Period nwpc:DisclosureOfNoninterestIncomeTextBlock
225 10301 - Disclosure - Operating expenses Network

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226 Implied Table Table

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227 Operating expenses Abstract ifrs-full:MaterialIncomeAndExpenseAbstract
228 Operating expenses Concept (Text Block (HTML)) For Period nwpc:DisclosureOfOperatingRestructuringAndEmployeeCompensationExpensesTextBlock
229 10401 - Disclosure - Pensions Network

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230 Implied Table Table

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232 Pensions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
233 10501 - Disclosure - Auditor's remuneration Network

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234 Implied Table Table

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236 Auditor's remuneration Concept (Text Block (HTML)) For Period nwpc:DisclosureOfAuditorsRemunerationTextBlock
237 10601 - Disclosure - Tax Network

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238 Implied Table Table

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240 Tax Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
241 10701 - Disclosure - Profit/(loss) dealt with in the accounts of the Bank Network

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242 Disclosure of information about consolidated structured entities [table] Table

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247 Profit/(loss) dealt with in the accounts of the Bank Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
248 10801 - Disclosure - Financial instruments - classification Network

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249 Implied Table Table

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252 10901 - Disclosure - Financial instruments - valuation Network

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253 Implied Table Table

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256 11001 - Disclosure - Financial instruments - maturity analysis Network

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257 Implied Table Table

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260 11101 - Disclosure - Financial assets - impairments Network

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261 Implied Table Table

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264 11201 - Disclosure - Derivatives Network

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265 Implied Table Table

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268 11301 - Disclosure - Debt securities Network

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269 Implied Table Table

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272 11401 - Disclosure - Equity shares Network

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273 Implied Table Table

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274 Equity shares Abstract nwpc:EquitySharesAbstract
275 Equity shares Concept (Text Block (HTML)) For Period nwpc:DisclosureOfEquityFinancialInstrumentsTextBlock
276 11501 - Disclosure - Investments in Group undertakings Network

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277 Implied Table Table

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278 Investments in Group undertakings Abstract ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
279 Investments in Group undertakings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCompositionOfGroupExplanatory
280 11601 - Disclosure - Intangible assets Network

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281 Implied Table Table

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282 Intangible assets Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
283 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
284 11701 - Disclosure - Property, plant and equipment Network

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285 Implied Table Table

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 implied:Table
286 Property, plant and equipment Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
287 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
288 11801 - Disclosure - Prepayments, accrued income and other assets Network

*

*

 http://www.nwpc.com/role/DisclosurePrepaymentsAccruedIncomeAndOtherAssets
289 Implied Table Table

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290 Prepayments, accrued income and other assets Abstract ifrs-full:PrepaymentsAndAccruedIncomeAbstract
291 Prepayments, accrued income and other assets Concept (Text Block (HTML)) For Period nwpc:DisclosureOfPrepaymentsAccruedIncomeAndOtherAssetsTextBlock
292 11901 - Disclosure - Discontinued operations and assets and liabilities of disposal groups Network

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293 Implied Table Table

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294 Discontinued operations and assets and liabilities of disposal groups Abstract ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwnersAbstract
295 Discontinued operations and assets and liabilities of disposal groups Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsHeldForSaleAndDiscontinuedOperationsExplanatory
296 12001 - Disclosure - Short positions Network

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297 Implied Table Table

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298 Short positions Abstract ifrs-full:DisclosureOfFinancialLiabilitiesAbstract
299 Short positions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesHeldForTradingExplanatory
300 12101 - Disclosure - Provision for liabilities and charges Network

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*

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301 Implied Table Table

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*

 implied:Table
302 Provisions for liabilities and charges Abstract ifrs-full:ProvisionsAbstract
303 Provisions for liabilities and charges Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
304 12201 - Disclosure - Accruals and other liabilities Network

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*

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305 Implied Table Table

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 implied:Table
306 Accruals and other liabilities Abstract ifrs-full:AccrualsAndDeferredIncomeAbstract
307 Accruals and other liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory
308 12301 - Disclosure - Deferred tax Network

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309 Implied Table Table

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310 Deferred tax Abstract ifrs-full:NetDeferredTaxAssetsAndLiabilitiesAbstract
311 Deferred tax Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
312 12401 - Disclosure - Subordinated liabilities Network

*

*

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313 Implied Table Table

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314 Subordinated liabilities Abstract ifrs-full:SubordinatedLiabilitiesAbstract
315 Subordinated liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSubordinatedLiabilitiesExplanatory
316 12501 - Disclosure - Share capital and reserves Network

*

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317 Implied Table Table

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318 Share capital and reserves Abstract ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
319 Share capital and reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
320 12601 - Disclosure - Leases Network

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*

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321 Implied Table Table

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322 Leases Abstract ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorAbstract
323 Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLeasesExplanatory
324 12701 - Disclosure - Structured entities Network

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325 Implied Table Table

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326 Structured entities Abstract ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesAbstract
327 Structured entities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesExplanatory
328 12801 - Disclosure - Asset transfers Network

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329 Implied Table Table

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330 Asset transfers Abstract nwpc:DisclosureOfTransferOfFinancialAssetsAbstract
331 Asset transfers Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransfersOfFinancialAssetsExplanatory
332 12901 - Disclosure - Capital resources Network

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333 Implied Table Table

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334 Capital resources Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
335 Capital resources Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
336 13001 - Disclosure - Memorandum items Network

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337 Implied Table Table

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338 Memorandum items Abstract ifrs-full:DisclosureOfContingentLiabilitiesAbstract
339 Memorandum items Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
340 13101 - Disclosure - Net cash flow from operating activities Network

*

*

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341 Implied Table Table

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342 Net cash flow from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
343 Net cash flow from operating activities Concept (Text Block (HTML)) For Period nwpc:DisclosureOfNetCashFlowFromOperatingActivitiesTextBlock
344 13201 - Disclosure - Analysis of the net investment in business interests and intangible assets Network

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*

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345 Implied Table Table

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347 Analysis of the net investment in business interests and intangible assets Concept (Text Block (HTML)) For Period nwpc:AnalysisOfNetInvestmentInBusinessInterestsAndIntangibleAssetsTextBlock
348 13301 - Disclosure - Interest received and paid Network

*

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349 Implied Table Table

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350 Interest received and paid Abstract nwpc:InterestReceivedPaidNetAbstract
351 Interest received and paid Concept (Text Block (HTML)) For Period nwpc:DisclosureOfInterestReceivedAndPaidExplanatoryTextBlock
352 13401 - Disclosure - Analysis of changes in financing during the year Network

*

*

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353 Implied Table Table

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354 Analysis of changes in financing during year Abstract nwpc:AnalysisOfChangesInFinancingDuringYearAbstract
355 Analysis of changes in financing during the year Concept (Text Block (HTML)) For Period nwpc:DisclosureOfChangesInShareCapitalReservesAndOtherEquityInterestAndSubordinatedLiabilitiesTextBlock
356 13501 - Disclosure - Analysis of cash and cash equivalents Network

*

*

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357 Implied Table Table

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358 Analysis of cash and cash equivalents Abstract ifrs-full:CashAndCashEquivalentsAbstract
359 Analysis of cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
360 13601 - Disclosure - Segmental analysis Network

*

*

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361 Implied Table Table

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362 Segmental analysis Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
363 Segmental analysis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
364 13701 - Disclosure - Directors and key management remuneration Network

*

*

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365 Implied Table Table

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*

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366 Directors' and key management remuneration Abstract nwpc:DirectorsAndKeyManagementRemunerationAbstract
367 Directors' and key management remuneration Concept (Text Block (HTML)) For Period nwpc:DisclosureOfDirectorsAndKeyManagementRemuneration
368 13801 - Disclosure - Transactions with directors and key management Network

*

*

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369 Implied Table Table

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370 Transactions with directors and key management Abstract nwpc:DisclosureOfInformationAboutTransactionsWithDirectorsAndKeyManagementAbstract
371 Transactions with directors and key management Concept (Text Block (HTML)) For Period nwpc:DisclosureOfInformationAboutTransactionsWithDirectorsAndKeyManagement
372 13901 - Disclosure - Related parties Network

*

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373 Implied Table Table

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374 Related parties Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
375 Related parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
376 14001 - Disclosure - Ultimate holding company Network

*

*

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377 Implied Table Table

*

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378 Ultimate holding company Abstract nwpc:DisclosureOfUltimateHoldingCompanyAbstract
379 Ultimate holding company Concept (Text Block (HTML)) For Period nwpc:DisclosureOfUltimateHoldingCompanyTextBlock
380 14101 - Disclosure - Post balance sheet events Network

*

*

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381 Implied Table Table

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382 Post balance sheet events Abstract nwpc:DisclosureOfEventsAfterReportingPeriodAbstract
383 Post balance sheet events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
384 14201 - Disclosure - Related undertakings Network

*

*

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385 Implied Table Table

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386 Related undertakings Abstract nwpc:DisclosureOfRelatedUndertakingsAbstract
387 Related undertakings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
388 20002 - Disclosure - Accounting policies (Policies) Network

*

*

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389 Implied Table Table

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390 Accounting policies Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
391 Presentation of accounts Concept (Text Block (HTML)) For Period nwpc:DescriptionOfAccountingPolicyForPresentationOfAccountsPolicyTextBlock
392 Basis of consolidation Concept (Text Block (HTML)) For Period nwpc:DescriptionOfAccountingPolicyForBasisOfConsolidationPolicyTextBock
393 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
394 Assets held for sale and discontinued operations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory
395 Employee benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
396 Intangible assets and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory
397 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
398 Impairment of intangible assets and property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory
399 Investment property Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory
400 Foreign currencies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
401 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
402 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
403 Tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
404 Financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
405 Impairment of financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory
406 Financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
407 Financial guarantee contracts Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory
408 Loan commitments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
409 Derecognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory
410 Sale and repurchase transactions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRepurchaseAndReverseRepurchaseAgreementsExplanatory
411 Netting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForOffsettingOfFinancialInstrumentsExplanatory
412 Capital instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
413 Derivatives and hedging Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
414 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
415 Shares in Group entities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
416 Provisions for liabilities Concept (Text Block (HTML)) For Period nwpc:DescriptionOfAccountingPolicyForProvisionsForLiabilitiesPolicyTextBlock
417 Deferred tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory
418 Loan impairment provisions Concept (Text Block (HTML)) For Period nwpc:DescriptionOfAccountingPolicyForProvisionsForLoanImpairmentPolicyTextBlock
419 Accounting developments Concept (Text Block (HTML)) For Period nwpc:DescriptionOfNatureOfAccountingDevelopmentsPolicyTextBlock
420 30003 - Disclosure - Accounting policies (Tables) Network

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421 Implied Table Table

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422 Accounting policies Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
423 Schedule of intangible assets and goodwill Concept (Text Block (HTML)) For Period nwpc:DisclosureOfEstimatedEconomicUsefulLifeOfIntangibleAssetsAndGoodwillTableTextBlock
424 Schedule of property, plant and equipment Concept (Text Block (HTML)) For Period nwpc:DisclosureOfEstimatedEconomicUsefulLifeOfPropertyPlantAndEquipmentTableTextBlock
425 30103 - Disclosure - Net interest income (Tables) Network

*

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426 Implied Table Table

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427 Net interest income Abstract nwpc:DisclosureOfInterestIncomeAndInterestExpenseAbstract
428 Schedule of net interest income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExplanatory
429 30203 - Disclosure - Non-interest income (Tables) Network

*

*

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430 Implied Table Table

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431 Non-interest income Abstract nwpc:DisclosureOfNoninterestIncomeAbstract
432 Schedule of non-interest income Concept (Text Block (HTML)) For Period nwpc:NonInterestIncomeTableTextBlock
433 30303 - Disclosure - Operating expenses (Tables) Network

*

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434 Implied Table Table

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435 Operating expenses Abstract ifrs-full:MaterialIncomeAndExpenseAbstract
436 schedule of operating expenses Concept (Text Block (HTML)) For Period nwpc:DisclosureOfOperatingExpensesTextBlock
437 Schedule of restructuring and divestment costs Concept (Text Block (HTML)) For Period nwpc:DisclosureOfRestructuringAndDivestmentTableTextBlock
438 Schedule of employees in continuing operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutEmployeesExplanatory
439 30403 - Disclosure - Pensions (Tables) Network

*

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440 Implied Table Table

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441 Pensions Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
442 Schedule of major classes of plan assets as a percentage of total plan assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
443 Schedule of derivative financial instruments Concept (Text Block (HTML)) For Period nwpc:DisclosureOfDerivativeFinancialInstrumentsRelatingToPensionTableTextBlock
444 Schedule of the net pension scheme surplus or deficit as a net asset or liability Concept (Text Block (HTML)) For Period nwpc:DisclosureOfNetPensionSchemeSurplusOrDeficitTableTextBlock
445 Schedule of changes in value of net pension liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
446 Schedule of principal actuarial assumptions Concept (Text Block (HTML)) For Period nwpc:DisclosureOfPrincipalActuarialAssumptionsTableTextBlock
447 Schedule of sensitivities of the present value of defined benefit obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
448 Schedule of different classes of scheme members proportions Concept (Text Block (HTML)) For Period nwpc:DisclosureOfDifferentClassesOfSchemeMembersProportionsTableTextBlock
449 Schedule of history of defined benefit schemes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
450 30503 - Disclosure - Auditor's remuneration (Tables) Network

*

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451 Implied Table Table

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452 Auditor's remuneration Abstract ifrs-full:AuditorsRemunerationAbstract
453 Schedule of auditor's remuneration Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAuditorsRemunerationExplanatory
454 30603 - Disclosure - Tax (Tables) Network

*

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455 Implied Table Table

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456 Tax Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
457 Schedule of current and deferred tax expense Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
458 Schedule of reconciliation of actual tax charge from the expected tax charge Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
459 30803 - Disclosure - Financial instruments - classification (Tables) Network

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460 Disclosure of detailed information about financial instruments [table] Table

*

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
461 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
462 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
463 Bank Member nwpc:NationalWestminsterBankPlcMember
464 Financial instruments LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
465 Schedule of classification for financial assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
466 Schedule of classification for financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
467 Schedule of amounts due from/to, included in the financial instrument assets and liabilities Concept (Text Block (HTML)) For Period nwpc:DisclosureOfFinancialInstrumentsClassificationAmountsDueToOrFromExplanatoryTableTextBlock
468 Schedule of financial instruments amounts relating to continuing operations included in operating profit (loss) before tax Concept (Text Block (HTML)) For Period nwpc:DisclosureOfFinancialInstrumentsClassificationAmountsRelatingToContinuingOperationsIncludedInProfitLossExplanatoryTableTextBlock
469 Schedule of financial assets and liabilities that are offset on the balance sheet Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory
470 30903 - Disclosure - Financial instruments - valuation (Tables) Network

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471 Implied Table Table

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472 Financial instruments Abstract ifrs-full:DisclosureOfFinancialInstrumentsAbstract
473 Schedule financial assets carried at fair value on the balance sheet by valuation hierarchy Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
474 Schedule financial liabilities carried at fair value on the balance sheet by valuation hierarchy Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
475 Schedule of carrying value and fair value of financial instruments carried at amortised cost on the balance sheet Concept (Text Block (HTML)) For Period nwpc:DisclosureOfCarryingValueAndFairValueOfFinancialInstrumentsExplanatoryTableTextBlock
476 31003 - Disclosure - Financial instruments - maturity analysis (Tables) Network

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477 Disclosure of detailed information about financial instruments [table] Table

*

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
478 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
479 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
480 Bank Member nwpc:NationalWestminsterBankPlcMember
481 Financial instruments LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
482 Schedule of residual maturity of financial instruments Concept (Text Block (HTML)) For Period nwpc:MaturityAnalysisOfFinancialInstrumentsTableTextBlock
483 Schedule of undiscounted cash flows payable by contractual maturity Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
484 31103 - Disclosure - Financial assets - impairments (Tables) Network

*

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485 Implied Table Table

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486 Financial assets - impairments Abstract ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedAbstract
487 Schedule of movement in provision for impairment losses on loan and advances Concept (Text Block (HTML)) For Period nwpc:DisclosureOfReconciliationInProvisionForImpairmentLossesOnLoansAndAdvancesTableTextBlock
488 Summary of impairment charge/(release) to the income statement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
489 Summary of impaired financial assets Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfFinancialAssetsThatAreIndividuallyDeterminedToBeImpaired
490 31203 - Disclosure - Derivatives (Tables) Network

*

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491 Implied Table Table

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492 Derivatives Abstract ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsAbstract
493 Schedule of notional amount and fair value of the derivatives Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory
494 31303 - Disclosure - Debt securities (Tables) Network

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495 Implied Table Table

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496 Debt securities Abstract ifrs-full:DebtInstrumentsHeldAbstract
497 Schedule of debt securities Concept (Text Block (HTML)) For Period nwpc:DebtSecuritiesTableTextBlock
498 Schedule of available-for-sale debt securities Concept (Text Block (HTML)) For Period nwpc:AvailableForSaleDebtSecuritiesAndRelatedYieldTableTextBlock
499 31403 - Disclosure - Equity shares (Tables) Network

*

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500 Implied Table Table

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501 Equity shares Abstract nwpc:EquitySharesAbstract
502 Schedule of equity shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAvailableforsaleAssetsExplanatory
503 31503 - Disclosure - Investments in Group undertakings (Tables) Network

*

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504 Implied Table Table

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505 Investments in Group undertakings Abstract ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
506 Schedule of investments in Group undertakings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
507 31603 - Disclosure - Intangible assets (Tables) Network

*

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508 Implied Table Table

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509 Intangible assets Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
510 Schedule of intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsAndGoodwillExplanatory
511 31703 - Disclosure - Property, plant and equipment (Tables) Network

*

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512 Implied Table Table

*

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513 Property, plant and equipment Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
514 Schedule of property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
515 31803 - Disclosure - Prepayments, accrued income and other assets (Tables) Network

*

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516 Implied Table Table

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518 Schedule of prepayments, accrued income and other assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
519 31903 - Disclosure - Discontinued operations and assets and liabilities of disposal groups (Tables) Network

*

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520 Implied Table Table

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522 Schedules relating to discontinued operations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDiscontinuedOperationsExplanatory
523 32003 - Disclosure - Short positions (Tables) Network

*

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524 Implied Table Table

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525 Short positions Abstract ifrs-full:DisclosureOfFinancialLiabilitiesAbstract
526 Schedule of short positions Concept (Text Block (HTML)) For Period nwpc:DisclosureOfShortPositionsExplanatoryTableTextBlock
527 32103 - Disclosure - Provision for liabilities and charges (Tables) Network

*

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528 Implied Table Table

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529 Provisions for liabilities and charges Abstract ifrs-full:ProvisionsAbstract
530 Schedule for provisions for liabilities and charges Concept (Text Block (HTML)) For Period nwpc:ScheduleOfProvisionsTableTextBlock
531 32203 - Disclosure - Accruals and other liabilities (Tables) Network

*

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532 Implied Table Table

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 implied:Table
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534 Schedule of accruals and other liabilities Concept (Text Block (HTML)) For Period nwpc:ScheduleOfAccrualsAndOtherLiabilitiesTableTextBlock
535 32303 - Disclosure - Deferred tax (Tables) Network

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 http://www.nwpc.com/role/DisclosureDeferredTaxTables
536 Implied Table Table

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539 Schedule of net deferred tax asset Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
540 Schedule of recognised deferred tax assets in respect of tax losses Concept (Text Block (HTML)) For Period nwpc:IfrsSummaryOfOperatingLossCarryforwardsTableTextBlock
541 32403 - Disclosure - Subordinated liabilities (Tables) Network

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*

 http://www.nwpc.com/role/DisclosureSubordinatedLiabilitiesTables
542 Implied Table Table

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543 Subordinated liabilities Abstract ifrs-full:SubordinatedLiabilitiesAbstract
544 Schedule of subordinated liabilities Concept (Text Block (HTML)) For Period nwpc:ScheduleOfSubordinatedLiabilitiesTableTextBlock
545 Schedule of contractual maturity of subordinated liabilities Concept (Text Block (HTML)) For Period nwpc:ScheduleOfContractualMaturityOfSubordinatedLiabilitiesTableTextBlock
546 Schedule of issuances and redemptions Concept (Text Block (HTML)) For Period nwpc:ScheduleOfIssuancesAndRedemptionsSubordinatedLiabilitiesTableTextBlock
547 32503 - Disclosure - Share capital and reserves (Tables) Network

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 http://www.nwpc.com/role/DisclosureShareCapitalAndReservesTables
548 Implied Table Table

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550 Schedule of allotted, called up and fully paid shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
551 32603 - Disclosure - Leases (Tables) Network

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 http://www.nwpc.com/role/DisclosureLeasesTables
552 Implied Table Table

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554 Schedule of minimum amounts receivable under non-cancellable leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorExplanatory
555 Schedule of additional information about leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutLeasingActivitiesForLessorExplanatory
556 Schedule of residual value recoverable Concept (Text Block (HTML)) For Period nwpc:DisclosureOfResidualValueRecoverableTableTextBlock
557 32703 - Disclosure - Structured entities (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureStructuredEntitiesTables
558 Implied Table Table

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560 Schedule of analyses the asset categories of own-asset securitisations transferred assets continue to be recorded on Group's balance sheet Concept (Text Block (HTML)) For Period nwpc:DisclosureOfAssetCategoriesOfTransferredAssetsRecordedOnConsolidatedFinancialStatementsTableTextBlock
561 Schedule of Group's interest in unconsolidated structured entities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory
562 32803 - Disclosure - Asset transfers (Tables) Network

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 http://www.nwpc.com/role/DisclosureAssetTransfersTables
563 Implied Table Table

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565 Schedule of assets subject to securities repurchase agreements or security lending transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionExplanatory
566 Schedule of assets recognized on Bank's balance sheet Concept (Text Block (HTML)) For Period nwpc:DisclosureOfAssetsToBeRecognizedOnBalanceSheetTableTextBlock
567 32903 - Disclosure - Capital resources (Tables) Network

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*

 http://www.nwpc.com/role/DisclosureCapitalResourcesTables
568 Implied Table Table

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570 Schedule of regulatory capital Concept (Text Block (HTML)) For Period nwpc:ScheduleOfRegulatoryCapitalTableTextBlock
571 33001 - Disclosure - Memorandum items (Tables) Network

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 http://www.nwpc.com/role/DisclosureMemorandumItemsTables
572 Implied Table Table

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574 Schedule of contingent liabilities and commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
575 Schedule of contractual obligations for future expenditure not provided for in the accounts Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
576 33103 - Disclosure - Net cash flow from operating activities (Tables) Network

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*

 http://www.nwpc.com/role/DisclosureNetCashFlowFromOperatingActivitiesTables
577 Implied Table Table

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578 Net cash flow from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
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580 33203 - Disclosure - Analysis of the net investment in business interests and intangible assets (Tables) Network

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 http://www.nwpc.com/role/DisclosureAnalysisOfNetInvestmentInBusinessInterestsAndIntangibleAssetsTables
581 Implied Table Table

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583 Schedule of the analysis of the net investment in business interests and intangible assets Concept (Text Block (HTML)) For Period nwpc:AnalysisOfNetInvestmentInBusinessInterestsAndIntangibleAssetsTableTextBlock
584 33303 - Disclosure - Interest received and paid (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureInterestReceivedAndPaidTables
585 Implied Table Table

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586 Interest received and paid Abstract nwpc:InterestReceivedPaidNetAbstract
587 Schedule of interest received and paid Concept (Text Block (HTML)) For Period nwpc:InterestReceivedPaidTableTextBlock
588 33403 - Disclosure - Analysis of changes in financing during the year (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfChangesInFinancingDuringYearTables
589 Implied Table Table

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591 Schedule of the analysis of changes in financing during the year Concept (Text Block (HTML)) For Period nwpc:AnalysisOfChangesInFinancingDuringYearTableTextBlock
592 33503 - Disclosure - Analysis of cash and cash equivalents (Tables) Network

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*

 http://www.nwpc.com/role/DisclosureAnalysisOfCashAndCashEquivalentsTables
593 Implied Table Table

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596 33603 - Disclosure - Segmental analysis (Tables) Network

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*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisTables
597 Implied Table Table

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599 Schedule of operating segments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
600 Schedule of geographical segments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
601 33703 - Disclosure - Directors and key management remuneration (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureDirectorsAndKeyManagementRemunerationTables
602 Implied Table Table

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603 Directors' and key management remuneration Abstract nwpc:DirectorsAndKeyManagementRemunerationAbstract
604 Schedule of directors' remuneration Concept (Text Block (HTML)) For Period nwpc:DisclosureOfInformationAboutDirectors
605 Schedule of compensation of key management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
606 33803 - Disclosure - Transactions with directors and key management (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureTransactionsWithDirectorsAndKeyManagementTables
607 Implied Table Table

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610 33903 - Disclosure - Related parties (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureRelatedPartiesTables
611 Implied Table Table

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612 Related parties Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
613 Schedule of income and operating expenses on transactions between related parties Concept (Text Block (HTML)) For Period nwpc:DisclosureOfIncomeAndOperatingExpenseBetweenRelatedPartiesTableTextBlock
614 34203 - Disclosure - Related undertakings (Tables) Network

*

*

 http://www.nwpc.com/role/DisclosureRelatedUndertakingsTables
615 Implied Table Table

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616 Related undertakings Abstract nwpc:DisclosureOfRelatedUndertakingsAbstract
617 Schedule of related undertakings and Overseas branches Concept (Text Block (HTML)) For Period nwpc:DisclosureOfRelatedUndertakingsTableTextBlock
618 40001 - Disclosure - Accounting policies (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAccountingPoliciesDetails
619 Disclosure of initial application of standards or interpretations [table] Table

*

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624 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
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628 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
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636 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
637 Retail mortgages Member ifrs-full:MortgagesMember
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647 Payment protection insurance Member nwpc:PaymentProtectionInsuranceMember
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654 Estimated useful economic lives Concept (xbrli:durationItemType) For Period nwpc:UsefulLivesIntangibleAssetsOtherThanGoodwill
655 Property, plant and equipment Abstract ifrs-full:PropertyPlantAndEquipmentAbstract
656 Estimated useful economic lives Concept (xbrli:durationItemType) For Period nwpc:UsefulLifeOfPropertyPlantAndEquipment
657 Reclassifications Abstract ifrs-full:DisclosureOfReclassificationsOrChangesInPresentationAbstract
658 Holding period for loans and receivables Concept (xbrli:durationItemType) For Period nwpc:HoldingPeriodForLoanAndReceivablesReclassificationPurpose
659 Financial assets carried at amortised cost Abstract ifrs-full:CategoriesOfFinancialAssetsAbstract
660 Write off period Concept (xbrli:durationItemType) For Period nwpc:FinancialAssetWriteoffPeriod
661 Write off period of outstanding amount Concept (xbrli:durationItemType) For Period nwpc:FinancialAssetWriteoffPeriodOutstandingAmount
662 Derivatives and hedging Abstract ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsAbstract
663 Number of types of hedges Concept (Integer) For Period nwpc:NumberOfTypesOfHedges
664 Provisions for liabilities Abstract ifrs-full:ProvisionsAbstract
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666 Deferred tax Abstract ifrs-full:DeferredTaxAssetsAndLiabilitiesAbstract
667 Deferred tax Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
668 Unrecognised deferred tax Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
669 Loan impairment provisions Abstract nwpc:LoanImpairmentProvisionsAbstract
670 Number of components Concept (Integer) For Period nwpc:NumberOfComponentsOfLoanImpairmentProvisions
671 40002 - Disclosure - Accounting policies - Accounting developments (Details) Network

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*

 http://www.nwpc.com/role/DisclosureAccountingPoliciesAccountingDevelopmentsDetails
672 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

*

*

 ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsTable
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674 New IFRSs [member] Member ifrs-full:NewIFRSsMember
675 IFRS 16 Member nwpc:NewIfrs16LeasesMember
676 Financial effect of transition from previous GAAP to IFRSs [axis] Axis ifrs-full:FinancialEffectOfTransitionFromPreviousGAAPToIFRSsAxis
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685 Pre tax decrease in equity on change in impairment methodology due to transition Concept (Monetary) As Of Credit nwpc:IncreaseDecreaseInEquityChangeInImpairmentMethodologyDueToTransitionBeforeTax
686 Net tax impact Concept (Monetary) As Of Debit nwpc:IncreaseDecreaseInEquityDueToTransitionTax
687 Right of Use asset Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
688 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
689 40101 - Disclosure - Net interest income (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureNetInterestIncomeDetails
690 Implied Table Table

*

*

 implied:Table
691 Net interest income Abstract nwpc:DisclosureOfInterestIncomeAndInterestExpenseAbstract
692 Loans and advances to customers Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndAdvancesToCustomers
693 Loans and advances to banks Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndAdvancesToBanks
694 Debt securities Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnDebtInstrumentsHeld
695 Interest receivable Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
696 Customer accounts: demand deposits Concept (Monetary) For Period Debit nwpc:InterestExpenseOnDemandDepositsFromCustomers
697 Customer accounts: savings deposits Concept (Monetary) For Period Debit nwpc:InterestExpenseOnSavingsDepositsFromCustomers
698 Customer accounts: other time deposits Concept (Monetary) For Period Debit nwpc:InterestExpenseOnOtherTimeDepositsFromCustomers
699 Balances with banks Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBankLoansAndOverdrafts
700 Debt securities in issue Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnDebtInstrumentsIssued
701 Subordinated liabilities Concept (Monetary) For Period Debit nwpc:InterestExpenseOnSubordinatedLiabilities
702 Internal funding of trading businesses Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinancialLiabilitiesHeldForTrading
703 Interest payable Concept (Monetary) For Period Debit ifrs-full:InterestExpense
704 Net interest income Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
705 40201 - Disclosure - Non-interest income (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureNonInterestIncomeDetails
706 Implied Table Table

*

*

 implied:Table
707 Non-interest income Abstract nwpc:DisclosureOfNoninterestIncomeAbstract
708 Fees and commissions receivable Abstract ifrs-full:FeeAndCommissionIncomeAbstract
709 Payment Services Concept (Monetary) For Period Credit nwpc:PaymentServicesProviderFeeAndCommissionIncome
710 Credit and debit card fees Concept (Monetary) For Period Credit nwpc:CreditRelatedFeeAndCommissionIncomeCards
711 Lending (credit facilities) Concept (Monetary) For Period Credit ifrs-full:CreditrelatedFeeAndCommissionIncome
712 Brokerage Concept (Monetary) For Period Credit ifrs-full:BrokerageFeeIncome
713 Investment management Concept (Monetary) For Period Credit ifrs-full:PortfolioAndOtherManagementFeeIncome
714 Trade finance Concept (Monetary) For Period Credit nwpc:TradeFinanceRelatedFeeAndCommissionIncome
715 Other Concept (Monetary) For Period Credit ifrs-full:OtherFeeAndCommissionIncome
716 Total fee and commission income Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
717 Fees and commissions payable Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
718 Income from trading activities Abstract ifrs-full:TradingIncomeExpenseAbstract
719 Foreign exchange Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpenseOnForeignExchangeContracts
720 Interest rate Concept (Monetary) For Period Credit nwpc:TradingIncomeExpenseOnInterestRate
721 Credit Concept (Monetary) For Period Credit nwpc:TradingIncomeExpenseOnCredit
722 Equities and other Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpenseOnEquityInstruments
723 Total trading income (expense) Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpense
724 Operating lease and other rental income Concept (Monetary) For Period Credit ifrs-full:OperatingLeaseIncome
725 Changes in the fair value of financial assets and liabilities designated at fair value through profit or loss and related derivatives Concept (Monetary) For Period Credit nwpc:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssetsLiabilities
726 Changes in the fair value of investment properties Concept (Monetary) For Period ifrs-full:GainsLossesOnFairValueAdjustmentInvestmentProperty
727 Profit on sale of securities Concept (Monetary) For Period Credit nwpc:GainLossOnSaleOfSecurities
728 Profit on sale of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
729 Profit/(loss) on sale of subsidiaries and associates Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfInvestments
730 Profit/(loss) on disposal or settlement of loans and receivables Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnLoansAndReceivables
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732 Share of profits of associated entities Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
733 Other income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
734 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
735 Profit on sale of securities in RBSI Concept (Monetary) For Period Credit nwpc:GainLossOnSaleOfSecuritiesInSubsidiaries
736 40301 - Disclosure - Operating expenses (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureOperatingExpensesDetails
737 Implied Table Table

*

*

 implied:Table
738 Operating expenses Abstract ifrs-full:MaterialIncomeAndExpenseAbstract
739 Wages, salaries and other staff costs Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
740 Social security costs Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
741 Pension cost - defined benefit schemes (see Note 4) Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
742 Pension cost - gains on curtailments or settlements (see Note 4) Concept (Monetary) For Period Debit nwpc:LossGainOnCurtailmentsOrSettlements
743 Pension cost - defined contribution schemes Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
744 Staff Costs Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
745 Premises and equipment Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
746 Other administrative expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
747 Property, plant and equipment, depreciation and write down (see Note 17) Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
748 Intangible assets amortisation (see Note 16) Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
749 Depreciation and amortisation expense Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
750 Write down of goodwill and other intangible assets (see Note 16) Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
751 Operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
752 40302 - Disclosure - Operating expenses - Restructuring (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureOperatingExpensesRestructuringDetails
753 Implied Table Table

*

*

 implied:Table
754 Operating expenses Abstract ifrs-full:MaterialIncomeAndExpenseAbstract
755 Staff costs Concept (Monetary) For Period Debit nwpc:ExpenseOfRestructuringActivitiesRelatingToStaff
756 Premises and depreciation Concept (Monetary) For Period Debit nwpc:ExpenseOfRestructuringActivitiesRelatingToPremisesAndDepreciation
757 Other Concept (Monetary) For Period Debit nwpc:ExpenseOfRestructuringActivitiesRelatingToOther
758 Restructuring costs Concept (Monetary) For Period Debit ifrs-full:ExpenseOfRestructuringActivities
759 40303 - Disclosure - Operating expenses - Employee (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureOperatingExpensesEmployeeDetails
760 Schedule of operating expenses Table Table

*

*

 nwpc:ScheduleOfOperatingExpensesTable
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765 Segments [axis] Axis ifrs-full:SegmentsAxis
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768 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
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776 UK Member country:GB
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778 Rest Of the World Member nwpc:RestOfWorldMember
779 Operating expenses LineItems nwpc:DisclosureOfOperatingExpensesLineItems
780 Average number of persons employed Abstract ifrs-full:NumberAndAverageNumberOfEmployeesAbstract
781 Average number of employees Concept (Decimal) For Period ifrs-full:AverageNumberOfEmployees
782 Number of employees Concept (Decimal) As Of ifrs-full:NumberOfEmployees
783 40401 - Disclosure - Pensions (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsDetails
784 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
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788 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
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791 Salary inflation (in percent) Concept (Percent) For Period nwpc:MaximumAnnualSalaryInflation
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793 Number of appointed trustee directors Concept (Decimal) As Of nwpc:NumberOfTrusteeDirectorsAppointed
794 40402 - Disclosure - Pensions - Major classes of plan assets as a percentage of total plan assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsMajorClassesOfPlanAssetsAsPercentageOfTotalPlanAssetsDetails
795 Disclosure of defined benefit plans [table] Table

*

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 ifrs-full:DisclosureOfDefinedBenefitPlansTable
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802 Energy and utilities Concept (Percent) As Of nwpc:EnergyAndUtilitiesPercentageContributedToFairValueOfPlanAssets
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811 Hedge funds Concept (Percent) As Of nwpc:HedgeFundsPercentageContributedToFairValueOfPlanAssets
812 Real estate Concept (Percent) As Of nwpc:RealEstatePercentageContributedToFairValueOfPlanAssets
813 Derivatives Concept (Percent) As Of nwpc:DerivativesPercentageContributedToFairValueOfPlanAssets
814 Cash and other assets Concept (Percent) As Of nwpc:CashAndOtherAssetsPercentageContributedToFairValueOfPlanAssets
815 Equity exposure of equity futures Concept (Percent) As Of nwpc:EquityExposureOfEquityFuturesPercentageContributedToFairValueOfPlanAssets
816 Cash exposure of equity futures Concept (Percent) As Of nwpc:CashExposureOfEquityFuturesPercentageContributedToFairValueOfPlanAssets
817 Total Concept (Percent) As Of nwpc:PlanAssetsPercentageContributionsToFairValueOfPlanAssets
818 Percentage of total plan assets Concept (Percent) As Of nwpc:DefinedBenefitPlanPercentageOfTotalPlanAssets
819 40403 - Disclosure - Pensions - Main scheme's holding of derivative instruments (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsMainSchemeSHoldingOfDerivativeInstrumentsDetails
820 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
821 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
822 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
823 Swap Member ifrs-full:SwapContractMember
824 Inflation rate swaps Member ifrs-full:CurrencySwapContractMember
825 Interest rate swaps Member ifrs-full:InterestRateSwapContractMember
826 Currency forwards Member ifrs-full:ForwardContractMember
827 Equity and bond call options Member ifrs-full:PurchasedCallOptionsMember
828 Equity and bond put options Member ifrs-full:WrittenPutOptionsMember
829 Other Member nwpc:OtherFinancialInstrumentsMember
830 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
831 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
832 Main Scheme Member nwpc:MainSectionOfRoyalBankOfScotlandGroupPensionFundMember
833 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
834 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
835 Fair value of assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
836 Fair value of liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
837 Collateral Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
838 40404 - Disclosure - Pensions - Amounts recognised on the balance sheet (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsAmountsRecognisedOnBalanceSheetDetails
839 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
840 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
841 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
842 Asset ceiling/minimum funding Member ifrs-full:EffectOfAssetCeilingMember
843 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
844 Net pension (liability)/asset Abstract ifrs-full:SurplusDeficitInPlanAbstract
845 Fund assets at fair value Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
846 Present value of fund liabilities Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
847 Funded status Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
848 Retirement benefit liability Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
849 40405 - Disclosure - Pensions - Net pension (liability)/asset (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsNetPensionLiabilityAssetDetails
850 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
851 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
852 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
853 Bank Member nwpc:NationalWestminsterBankPlcMember
854 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
855 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
856 Continuing operations Member ifrs-full:ContinuingOperationsMember
857 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
858 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
859 Net pension (liability)/asset Abstract ifrs-full:SurplusDeficitInPlanAbstract
860 Net assets surplus of schemes in surplus (included in Prepayments, accrued income and other assets, Note 18) Concept (Monetary) As Of Debit ifrs-full:AssetsOfBenefitPlan
861 Net liabilities of schemes in deficit Concept (Monetary) As Of Credit ifrs-full:LiabilitiesOtherThanActuarialPresentValueOfPromisedRetirementBenefits
862 Net pension Deficit Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
863 Income statement charge Concept (Monetary) For Period Credit nwpc:ExpenseIncomeNetDefinedBenefitLiabilityAsset
864 40406 - Disclosure - Pensions - Changes in value of net pension liability/(asset) (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsChangesInValueOfNetPensionLiabilityAssetDetails
865 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
866 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
867 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
868 Fair value of plan assets Member ifrs-full:PlanAssetsMember
869 Present value of defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
870 Asset ceiling/minimum funding Member ifrs-full:EffectOfAssetCeilingMember
871 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
872 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
873 Bank Member nwpc:NationalWestminsterBankPlcMember
874 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
875 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
876 Main Scheme Member nwpc:MainSectionOfRoyalBankOfScotlandGroupPensionFundMember
877 Scenario [Axis] Axis us-gaap:StatementScenarioAxis
878 Scenario, Unspecified [Domain] Member us-gaap:ScenarioUnspecifiedDomain
879 Forecast Member us-gaap:ScenarioForecastMember
880 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
881 Balance at beginning of year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
882 Currency translation and other adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
883 Net interest expense Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
884 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
885 Less direct contributions from other scheme members Concept (Monetary) For Period Debit nwpc:DirectContributionsFromOtherSchemeNetDefinedBenefitLiabilityAsset
886 Past service cost Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
887 Total Concept (Monetary) For Period Credit nwpc:ExpenseIncomeNetDefinedBenefitLiabilityAsset
888 Return on plan assets above recognised interest income Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
889 Experience gains and losses Concept (Monetary) For Period Debit nwpc:ExperienceGainsAndLossesOfNetDefinedBenefitLiabilityAsset
890 Effect of changes in actuarial financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
891 Effect of changes in actuarial demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
892 Asset ceiling/minimum funding adjustments Concept (Monetary) For Period Debit ifrs-full:GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling
893 Total Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
894 Contributions by employer Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
895 Contributions by plan participants and other scheme members Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
896 Liabilities extinguished upon settlement Concept (Monetary) For Period Debit ifrs-full:PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset
897 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
898 Transfer to/from fellow subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
899 Transfer to disposal groups Concept (Monetary) For Period Debit nwpc:IncreaseDecreaseThroughTransferToDisposalGroupsNetDefinedBenefitLiabilityAsset
900 Balance at end of year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
901 Contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanNetDefinedBenefitLiabilityAsset
902 40407 - Disclosure - Pensions - Assumptions (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsAssumptionsDetails
903 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
904 Valuation Method [Axis] Axis nwpc:ValuationMethodAxis
905 Valuation Method Member nwpc:ValuationMethodMember
906 2015 triennial valuations Member nwpc:TriennialValuations2015Member
907 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
908 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
909 Main Scheme Member nwpc:MainSectionOfRoyalBankOfScotlandGroupPensionFundMember
910 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
911 Funding level, as percent Concept (Percent) For Period nwpc:FundingLevelAssumptionsPercentage
912 Pension liabilities Concept (Monetary) As Of Credit nwpc:PensionLiabilityCalculatedAsPerActuarialAssumptions
913 Deficit Concept (Monetary) As Of Debit nwpc:DeficitAsPerActuarialAssumptions
914 Settlement of the future contributions Concept (Monetary) For Period Debit nwpc:FutureContributionToFunding
915 Investment return period Concept (xbrli:durationItemType) For Period nwpc:InvestmentReturnPeriod
916 Remaining deficit Concept (Monetary) As Of Debit nwpc:RemainingDeficitAsPerActuarialAssumptions
917 Average cost Concept (Percent) For Period nwpc:AverageCostOfFutureServiceOfCurrentMembersAsPercentageOfBasicSalaryBeforeContributions
918 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
919 Inflation assumption (RPI) Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
920 Rate of increase in salaries Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
921 Rate of increase in deferred pensions Concept (Percent) As Of nwpc:ActuarialAssumptionRateOfIncreaseInDeferredPensions
922 Rate of increase in pensions in payment Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreases
923 Proportion of pension converted to a cash lump sum at retirement Concept (Percent) As Of nwpc:ProportionOfPensionConvertedToCashLumpSumAtRetirement
924 Inflation assumption, RPI floor Concept (Percent) As Of nwpc:ActuarialAssumptionOfExpectedRatesOfInflationRetailPriceIndexFloor
925 Inflation assumption, RPI cap Concept (Percent) As Of nwpc:ActuarialAssumptionOfExpectedRatesOfInflationRetailPriceIndexCap
926 Inflation assumption, LPI floor Concept (Percent) As Of nwpc:ActuarialAssumptionOfExpectedRatesOfInflationLimitedPriceIndexationFloor
927 Longevity at age 60 for current pensioners, Males (years) Concept (xbrli:durationItemType) For Period nwpc:LongevityAtAge60ForCurrentPensionersMales
928 Longevity at age 60 for current pensioners, Females (years) Concept (xbrli:durationItemType) For Period nwpc:LongevityAtAge60ForCurrentPensionersFemales
929 Longevity at age 60 for future pensioners currently aged 40, Males (years) Concept (xbrli:durationItemType) For Period nwpc:LongevityAtAge60ForFuturePensionersCurrentlyAged40Males
930 Longevity at age 60 for future pensioners currently aged 40, Females (years) Concept (xbrli:durationItemType) For Period nwpc:LongevityAtAge60ForFuturePensionersCurrentlyAged40Females
931 Weighted average duration of defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
932 40408 - Disclosure - Pensions - Sensitivities of the present value of defined benefit obligation (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsSensitivitiesOfPresentValueOfDefinedBenefitObligationDetails
933 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
934 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
935 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
936 Discount rate Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
937 Inflation Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflationMember
938 Pension increase Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember
939 Longevity increase Member nwpc:ActuarialAssumptionOfLongevityIncreaseMember
940 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
941 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
942 Main Scheme Member nwpc:MainSectionOfRoyalBankOfScotlandGroupPensionFundMember
943 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
944 Increase in actuarial assumption (as a percent) Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
945 (Decrease)/Increase in obligation Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
946 Longevity increase of one year Concept (xbrli:durationItemType) For Period nwpc:ActuarialAssumptionOfLongevityIncrease
947 40409 - Disclosure - Pensions - Membership category (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsMembershipCategoryDetails
948 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
949 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
950 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
951 Main Scheme Member nwpc:MainSectionOfRoyalBankOfScotlandGroupPensionFundMember
952 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
953 Net pension (liability)/asset Abstract ifrs-full:SurplusDeficitInPlanAbstract
954 Active members Concept (Percent) For Period nwpc:PercentageOfActiveClassSchemeMembers
955 Deferred members Concept (Percent) For Period nwpc:PercentageOfDeferredClassSchemeMembers
956 Pensioners and dependants Concept (Percent) For Period nwpc:PercentageOfPensionerClassSchemeMembers
957 Total proportions to the different classes of scheme Concept (Percent) For Period nwpc:TotalClassOfSchemeMembers
958 40410 - Disclosure - Pensions - History of defined benefit schemes (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePensionsHistoryOfDefinedBenefitSchemesDetails
959 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
960 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
961 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
962 Bank Member nwpc:NationalWestminsterBankPlcMember
963 Pensions LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
964 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
965 Present value of plan obligations Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
966 Funded status Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
967 Experience (losses)/gains on plan liabilities Concept (Monetary) For Period Debit nwpc:ExperienceGainsAndLossesOfNetDefinedBenefitLiabilityAsset
968 Experience gains/(losses) on plan assets Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
969 Actual return on plan assets Concept (Monetary) For Period Debit nwpc:ActualReturnOnPlanAssets
970 Actual return on plan assets - % Concept (Percent) For Period nwpc:PercentageOfActualReturnOnPlanAssets
971 40501 - Disclosure - Auditor's remuneration (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAuditorSRemunerationDetails
972 Disclosure of Auditors Remuneration [Table] Table

*

*

 nwpc:DisclosureOfAuditorsRemunerationTable
973 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
974 Counterparties [member] Member ifrs-full:CounterpartiesMember
975 EY Member nwpc:ErnstAndYoungLlpMember
976 Auditor's remuneration LineItems nwpc:DisclosureOfAuditorsRemunerationLineItems
977 Fees payable for the audit of the Group's annual accounts Concept (Monetary) For Period Debit nwpc:AuditorsRemunerationForAuditServicesOfGroupAnnualAccounts
978 Fees payable for the audit of the Bank's subsidiaries pursuant to legislation Concept (Monetary) For Period Debit nwpc:AuditorsRemunerationForAuditServicesOfSubsidiaries
979 Total audit and audit-related assurance service fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
980 40601 - Disclosure - Tax (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureTaxDetails
981 Implied Table Table

*

*

 implied:Table
982 Tax Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
983 Current tax Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
984 Charge for the year Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
985 Over/(under) provision in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
986 Total current tax Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
987 Deferred tax Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
988 (Charge)/credit for the year Concept (Monetary) For Period Debit ifrs-full:OtherComponentsOfDeferredTaxExpenseIncome
989 Reduction in the carrying value of deferred tax assets Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
990 (Under)/over provision in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
991 Tax charge for the year Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
992 40602 - Disclosure - Tax - Reconciliation (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureTaxReconciliationDetails
993 Disclosure of geographical areas [table] Table

*

*

 ifrs-full:DisclosureOfGeographicalAreasTable
994 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
995 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
996 UK Member country:GB
997 Scenario [Axis] Axis us-gaap:StatementScenarioAxis
998 Scenario, Unspecified [Domain] Member us-gaap:ScenarioUnspecifiedDomain
999 Forecast Member us-gaap:ScenarioForecastMember
1000 Geographical segments LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
1001 UK corporation tax Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1002 Expected tax charge Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1003 Losses and temporary differences in year where no deferred tax asset recognised Concept (Monetary) For Period Debit nwpc:TaxEffectOfLossesAndTemporaryDifferencesWhereNoDeferredTaxAssetRecognised
1004 Foreign profits taxed at other rates Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
1005 UK tax rate change impact Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
1006 Non-deductible goodwill impairment Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfImpairmentOfGoodwill
1007 Losses on disposal and write-downs Concept (Monetary) For Period Debit nwpc:TaxEffectOfLossesOnDisposalsAndWritedownsExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1008 UK bank levy Concept (Monetary) For Period Debit nwpc:TaxEffectOfBankLevyExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1009 Regulatory and legal actions Concept (Monetary) For Period Debit nwpc:TaxEffectOfRegulatoryAndLegalActionsExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1010 Other disallowable items Concept (Monetary) For Period Debit nwpc:TaxEffectOfOtherExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1011 Non-taxable items Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
1012 Taxable foreign exchange movements Concept (Monetary) For Period Debit nwpc:TaxEffectOnForeignExchangeMovements
1013 Losses brought forward and utilised Concept (Monetary) For Period Debit nwpc:TaxEffectOnLossesBroughtForwardAndUtilised
1014 Reduction in carrying value of deferred tax asset Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
1015 Banking surcharge Concept (Monetary) For Period Debit nwpc:TaxEffectOnBankingSurcharge
1016 Adjustments in respect of prior years Concept (Monetary) For Period Debit nwpc:TaxEffectOnAdjustmentsInRespectOfPriorYears
1017 Tax charge for the year Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1018 Banking surcharge rate Concept (Percent) For Period nwpc:BankingSurchargeRate
1019 40801 - Disclosure - Financial instruments - classification - Assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationAssetsDetails
1020 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1021 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1022 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1023 Held-for-trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1024 Designated as at fair value through profit or loss Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1025 Available-for-sale Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1026 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
1027 Other assets Member nwpc:FinancialAssetsOtherMember
1028 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1029 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1030 Cash and balances at central banks Member nwpc:IfrsCashAndCashEquivalentsMember
1031 Loans and advances to banks - amounts due from intermediate holding company and fellow subsidiaries Member nwpc:LoansAndAdvancesToBanksDueFromHoldingCompanyAndFellowSubsidiariesMember
1032 Loans and advances to banks - reverse repos Member nwpc:LoansAndAdvancesToBanksReverseRepossessionMember
1033 Loans and advances to banks - other Member nwpc:LoansAndAdvancesToBanksOtherMember
1034 Loans and advances to customers - amounts due from fellow subsidiaries Member nwpc:LoansAndAdvancesToCustomersDueFromHoldingCompanyAndFellowSubsidiariesMember
1035 Loans and advances to customers - reverse repos Member nwpc:LoansAndAdvancesToCustomersReverseRepossessionMember
1036 Loans and advances to customers - other Member nwpc:LoansAndAdvancesToCustomersOtherMember
1037 Debt securities Member ifrs-full:DebtSecuritiesMember
1038 Equity shares Member ifrs-full:TradingEquitySecuritiesMember
1039 Investment in group undertakings Member nwpc:InvestmentInGroupMember
1040 Settlement balances Member nwpc:SettlementBalancesAssetMember
1041 Derivatives - amounts due from intermediate holding company and fellow subsidiaries Member nwpc:DerivativeFinancialAssetsDueFromHoldingCompanyAndFellowSubsidiariesMember
1042 Derivatives - amounts due from intermediate holding company Member nwpc:DerivativeFinancialAssetsDueFromHoldingCompanyMember
1043 Derivatives - other Member nwpc:DerivativeFinancialAssetsOtherMember
1044 Assets of disposal groups Member ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleMember
1045 Other assets Member ifrs-full:OtherAssetsMember
1046 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1047 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1048 Bank Member nwpc:NationalWestminsterBankPlcMember
1049 Financial instruments LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1050 Assets Abstract ifrs-full:AssetsAbstract
1051 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1052 Items in course of collection from other banks Concept (Monetary) As Of Debit ifrs-full:ItemsInCourseOfCollectionFromOtherBanks
1053 40802 - Disclosure - Financial instruments - classification - Liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationLiabilitiesDetails
1054 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1055 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1056 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1057 Held -for-trading Member nwpc:FinancialLiabilitiesClassifiedAsHeldForTradingCategoryMember
1058 Designated as at fair value through profit or loss Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
1059 Amortised cost Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1060 Other liabilities Member nwpc:OtherFinancialLiabilitiesCategoryMember
1061 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1062 Liabilities [member] Member ifrs-full:LiabilitiesMember
1063 Deposits - amounts due to intermediate holding company and fellow subsidiaries Member nwpc:DepositsToHoldingCompanyAndFellowSubsidiariesMember
1064 Deposits - repos Member nwpc:DepositsByBanksRepossessionMember
1065 Deposits - other Member nwpc:DepositsOtherMember
1066 Customer accounts - amounts due to fellow subsidiaries Member nwpc:CustomerAccountsDueToSubsidiariesMember
1067 Customer accounts - repos Member nwpc:CustomerAccountsRepossessionMember
1068 Customer accounts- other Member nwpc:CustomerAccountsOtherMember
1069 Debt securities in issue Member nwpc:DebtSecuritiesInIssueMember
1070 Settlement balances Member nwpc:SettlementBalancesLiabilitiesMember
1071 Short Positions Member nwpc:IfrsShortPositionsMember
1072 Derivatives- amounts due to intermediate holding company Member nwpc:DerivativeFinancialLiabilitiesDueToHoldingCompanyMember
1073 Derivatives- amounts due to intermediate holding company and fellow subsidiaries Member nwpc:DerivativeFinancialLiabilitiesDueToHoldingCompanyAndSubsidiariesMember
1074 Derivatives - other Member nwpc:DerivativesOtherMember
1075 Subordinated liabilities - amounts due to intermediate holding company and fellow subsidiaries Member nwpc:SubordinatedLiabilitiesDueToHoldingCompanyAndFellowSubsidiariesMember
1076 Subordinated liabilities - amounts due to intermediate holding company Member nwpc:SubordinatedLiabilitiesDueToHoldingCompanyMember
1077 Subordinated liabilities - other Member nwpc:SubordinatedFinancialLiabilitiesOtherMember
1078 Liabilities of disposal groups Member ifrs-full:DisposalGroupsClassifiedAsHeldForSaleMember
1079 Other liabilities Member nwpc:IfrsOtherLiabilitiesMember
1080 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1081 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1082 Bonds and Medium Term Notes Member nwpc:BondsAndMediumTermNotesMember
1083 Certificates of Deposit and Other Commercial Paper Member nwpc:CertificatesOfDepositAndOtherCommercialPaperMember
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1085 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1086 Bank Member nwpc:NationalWestminsterBankPlcMember
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1088 Liabilities Abstract ifrs-full:LiabilitiesAbstract
1089 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1090 Items in course of transmission to other banks Concept (Monetary) As Of Credit ifrs-full:ItemsInCourseOfTransmissionToOtherBanks
1091 Increase of carrying amount of other customer accounts designated as at fair value through profit or loss Concept (Monetary) As Of Credit nwpc:FinancialLiabilitiesAtFairValueThroughProfitOrLossDifference
1092 40803 - Disclosure - Financial instruments - classification - Amount due to or from (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationAmountDueToOrFromDetails
1093 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
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1097 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
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1100 Liabilities [member] Member ifrs-full:LiabilitiesMember
1101 Deposits by banks Member nwpc:DepositsByBanksMember
1102 Customer accounts Member nwpc:CustomerAccountsMember
1103 Derivatives Member ifrs-full:DerivativesMember
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1105 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1106 Bank Member nwpc:NationalWestminsterBankPlcMember
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1108 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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1110 Fellow subsidiaries Member nwpc:SubsidiariesOfRbsGroupMember
1111 Subsidiaries Member ifrs-full:SubsidiariesMember
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1115 Liabilities Abstract ifrs-full:LiabilitiesAbstract
1116 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1117 40804 - Disclosure - Financial instruments - classification - Gains and losses (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationGainsAndLossesDetails
1118 Implied Table Table

*

*

 implied:Table
1119 Financial instruments Abstract ifrs-full:DisclosureOfFinancialInstrumentsAbstract
1120 Profit (loss) Abstract ifrs-full:ProfitLossAbstract
1121 Gains/(losses) on financial assets/liabilities designated as at fair value through profit or loss Concept (Monetary) For Period Credit nwpc:GainsLossesOnFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss
1122 Gains/(losses) on disposal or settlement of loans and receivables Concept (Monetary) For Period Credit nwpc:GainsLossesOnDisposalOrSettlementOfLoansAndReceivables
1123 Gains on financial assets/liabilities designated as at fair value through profit or loss - discontinued operations Concept (Monetary) For Period Credit nwpc:GainsLossesOnFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLossDiscontinuedOperations
1124 Gains/(losses) on disposal or settlement of loans and receivables - discontinued operations Concept (Monetary) For Period Credit nwpc:GainsLossesOnDisposalOrSettlementOfLoansAndReceivablesDiscontinuedOperations
1125 40805 - Disclosure - Financial instruments - classification - Offsetable assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationOffsetableAssetsDetails
1126 Disclosure of offsetting of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfOffsettingOfFinancialAssetsTable
1127 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1128 Assets [member] Member ifrs-full:ClassesOfAssetsMember
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1131 Loans and advances to banks Member nwpc:LoansAndAdvancesToBanksMember
1132 Settlement balances Member nwpc:SettlementBalancesAssetMember
1133 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1134 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1135 Bank Member nwpc:NationalWestminsterBankPlcMember
1136 Disclosure of offsetting of financial assets LineItems ifrs-full:DisclosureOfOffsettingOfFinancialAssetsLineItems
1137 Net financial assets subject to offsetting, enforceable master netting arrangements Abstract ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract
1138 Offsetable instruments Abstract ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1139 Gross Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1140 IFRS offset Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1141 Balance sheet Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1142 Offsetable potential not recognised by IFRS Abstract ifrs-full:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssetsAbstract
1143 Effect of master netting agreement and similar agreements Concept (Monetary) As Of Credit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1144 Cash collateral Concept (Monetary) As Of Credit ifrs-full:CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1145 Other financial collateral Concept (Monetary) As Of Credit nwpc:OtherFinancialCollateralSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1146 Net amount after the effect of netting arrangements and related collateral Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1147 Instruments outside netting arrangements Concept (Monetary) As Of Debit nwpc:FinancialAssetsNotSubjectToMasterNettingArrangement
1148 Balance sheet total Concept (Monetary) As Of Debit nwpc:FinancialAssetsIncludingInstrumentsOutsideNettingArrangement
1149 40806 - Disclosure - Financial instruments - classification - Offsetable liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsClassificationOffsetableLiabilitiesDetails
1150 Disclosure of offsetting of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfOffsettingOfFinancialLiabilitiesTable
1151 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1152 Liabilities [member] Member ifrs-full:LiabilitiesMember
1153 Derivatives Member ifrs-full:DerivativesMember
1154 Deposits by banks Member nwpc:DepositsByBanksMember
1155 Repurchase agreements Member us-gaap:RepurchaseAgreementsMember
1156 Settlement balances Member nwpc:SettlementBalancesLiabilitiesMember
1157 Disclosure of offsetting of financial liabilities LineItems ifrs-full:DisclosureOfOffsettingOfFinancialLiabilitiesLineItems
1158 Net financial liabilities subject to offsetting, enforceable master netting arrangements Abstract ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract
1159 Offsetable instruments Abstract ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1160 Gross Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1161 IFRS offset Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1162 Balance sheet Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1163 Offsetable potential not recognised by IFRS Abstract ifrs-full:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilitiesAbstract
1164 Effect of master netting agreement and similar agreements Concept (Monetary) As Of Debit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1165 Cash collateral Concept (Monetary) As Of Debit ifrs-full:CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1166 Other financial collateral Concept (Monetary) As Of Debit nwpc:OtherFinancialCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1167 Net amount after the effect of netting arrangements and related collateral Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1168 Instruments outside netting arrangements Concept (Monetary) As Of Credit nwpc:FinancialLiabilityNotSubjectToMasterNettingArrangement
1169 Balance sheet total Concept (Monetary) As Of Credit nwpc:FinancialLiabilityIncludingInstrumentsOutsideNettingArrangement
1170 40901 - Disclosure - Financial instruments - valuation - FV of Assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsValuationFvOfAssetsDetails
1171 Disclosure of fair value measurement of assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1172 Measurement [axis] Axis ifrs-full:MeasurementAxis
1173 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
1174 Recurring Member us-gaap:FairValueMeasurementsRecurringMember
1175 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1176 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1177 Level 1 Member ifrs-full:Level1OfFairValueHierarchyMember
1178 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1179 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1180 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1181 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1182 Loans and Advances Member nwpc:LoansAndAdvancesMember
1183 Debt securities Member ifrs-full:DebtSecuritiesMember
1184 Equity shares Member ifrs-full:TradingEquitySecuritiesMember
1185 Derivatives Member ifrs-full:DerivativesMember
1186 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1187 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1188 Available-for-sale Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1189 Range [axis] Axis ifrs-full:RangeAxis
1190 Ranges [member] Member ifrs-full:RangesMember
1191 Maximum Member ifrs-full:TopOfRangeMember
1192 Minimum Member ifrs-full:BottomOfRangeMember
1193 Fair value of assets LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1194 CVA reserve Concept (Monetary) As Of Credit nwpc:CreditValueAdjustmentsReserve
1195 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1196 Proportion (as a percent) Concept (Percent) For Period nwpc:PercentageOfFairValueAssetsHierarchyToTotalFinancialAssets
1197 Sensitivity increase Concept (Monetary) For Period Debit ifrs-full:IncreaseInFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsAssets
1198 Sensitivity decrease Concept (Monetary) For Period Credit ifrs-full:DecreaseInFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsAssets
1199 Significant unobservable input trading rate Concept (Percent) For Period nwpc:SignificantUnobservableInputsTradingRate
1200 40902 - Disclosure - Financial instruments - valuation - FV of Liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsValuationFvOfLiabilitiesDetails
1201 Disclosure of fair value measurement of liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesTable
1202 Measurement [axis] Axis ifrs-full:MeasurementAxis
1203 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
1204 Recurring Member us-gaap:FairValueMeasurementsRecurringMember
1205 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1206 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1207 Level 1 Member ifrs-full:Level1OfFairValueHierarchyMember
1208 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1209 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1210 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1211 Liabilities [member] Member ifrs-full:LiabilitiesMember
1212 Deposits Member nwpc:IfrsDepositsMember
1213 Short Positions Member nwpc:IfrsShortPositionsMember
1214 Derivatives Member ifrs-full:DerivativesMember
1215 Disclosure of fair value measurement of liabilities [line items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesLineItems
1216 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1217 Proportion (as a percent) Concept (Percent) For Period nwpc:PercentageOfFairValueLiabilitiesHierarchyToTotalFinancialLiabilities
1218 40903 - Disclosure - Financial instruments - valuation - Assets at Amortised Cost (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsValuationAssetsAtAmortisedCostDetails
1219 Disclosure of fair value measurement of assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1220 Measurement [axis] Axis ifrs-full:MeasurementAxis
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1223 At fair value Member ifrs-full:AtFairValueMember
1224 Items where fair values approximates carrying value Member ifrs-full:NotMeasuredAtFairValueInStatementOfFinancialPositionButForWhichFairValueIsDisclosedMember
1225 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1226 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1227 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1228 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1229 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1230 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1231 Amortised cost Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1232 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1233 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1234 Cash and balances at central banks Member nwpc:IfrsCashAndCashEquivalentsMember
1235 Loans and advances to banks Member nwpc:LoansAndAdvancesToBanksMember
1236 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
1237 Debt securities Member ifrs-full:DebtSecuritiesMember
1238 Settlement balances Member nwpc:SettlementBalancesAssetMember
1239 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1240 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1241 Bank Member nwpc:NationalWestminsterBankPlcMember
1242 Fair value of assets LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1243 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1244 40904 - Disclosure - Financial instruments - valuation - Liabilities at Amortised Cost (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsValuationLiabilitiesAtAmortisedCostDetails
1245 Disclosure of fair value measurement of liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesTable
1246 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1247 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1248 Amortised cost Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1249 Measurement [axis] Axis ifrs-full:MeasurementAxis
1250 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
1251 Not at fair value Member nwpc:NotAtFairValueMember
1252 At fair value Member ifrs-full:AtFairValueMember
1253 Items where fair values approximates carrying value Member ifrs-full:NotMeasuredAtFairValueInStatementOfFinancialPositionButForWhichFairValueIsDisclosedMember
1254 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1255 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1256 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1257 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1258 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1259 Liabilities [member] Member ifrs-full:LiabilitiesMember
1260 Deposits by banks Member nwpc:DepositsByBanksMember
1261 Customer accounts Member nwpc:CustomerAccountsMember
1262 Debt securities in issue Member nwpc:DebtSecuritiesInIssueMember
1263 Settlement balances Member nwpc:SettlementBalancesLiabilitiesMember
1264 Notes in circulation Member nwpc:NotesInCirculationMember
1265 Subordinated liabilities Member nwpc:SubordinatedFinancialLiabilitiesMember
1266 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1267 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1268 Bank Member nwpc:NationalWestminsterBankPlcMember
1269 Fair value of liabilities LineItems ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesLineItems
1270 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1271 41001 - Disclosure - Financial instruments - maturity analysis (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsMaturityAnalysisDetails
1272 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1273 Maturity [axis] Axis ifrs-full:MaturityAxis
1274 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1275 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
1276 More than 1 year Member ifrs-full:LaterThanOneYearMember
1277 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1278 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1279 Cash and balances at central banks Member nwpc:IfrsCashAndCashEquivalentsMember
1280 Loans and advances to banks Member nwpc:LoansAndAdvancesToBanksMember
1281 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
1282 Debt securities Member ifrs-full:DebtSecuritiesMember
1283 Equity shares Member ifrs-full:TradingEquitySecuritiesMember
1284 Settlement balances Member nwpc:SettlementBalancesAssetMember
1285 Derivatives Member ifrs-full:DerivativesMember
1286 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1287 Liabilities [member] Member ifrs-full:LiabilitiesMember
1288 Deposits by banks Member nwpc:DepositsByBanksMember
1289 Customer accounts Member nwpc:CustomerAccountsMember
1290 Debt securities in issue Member nwpc:DebtSecuritiesInIssueMember
1291 Settlement balances and short positions Member nwpc:SettlementBalancesAndShortPositionsMember
1292 Derivatives Member ifrs-full:DerivativesMember
1293 Subordinated liabilities Member nwpc:SubordinatedFinancialLiabilitiesMember
1294 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1295 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1296 Bank Member nwpc:NationalWestminsterBankPlcMember
1297 Financial instruments LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1298 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1299 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1300 41002 - Disclosure - Financial instruments - maturity analysis - Contractual maturity of undiscounted cash flows (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialInstrumentsMaturityAnalysisContractualMaturityOfUndiscountedCashFlowsDetails
1301 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
1302 Maturity [axis] Axis ifrs-full:MaturityAxis
1303 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1304 0-3 months Member ifrs-full:NotLaterThanThreeMonthsMember
1305 3-12 months Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
1306 1- 3 years Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1307 3-5 years Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1308 5-10 years Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
1309 10-20 years Member nwpc:LaterThanTenYearsAndNotLaterThanTwentyYearsMember
1310 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1311 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1312 Financial liabilities Member ifrs-full:FinancialLiabilitiesMember
1313 Deposits by banks Member nwpc:DepositsByBanksMember
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1316 Subordinated liabilities Member nwpc:SubordinatedFinancialLiabilitiesMember
1317 Settlement balances and other liabilities Member nwpc:SettlementBalancesAndOtherLiabilitiesMember
1318 Settlement balances Member nwpc:SettlementBalancesLiabilitiesMember
1319 Guarantees and commitments Member nwpc:FinancialGuaranteesAndCommitmentsMember
1320 Guarantees Member ifrs-full:FinancialGuaranteeContractsMember
1321 Commitments Member nwpc:FinancialCommitmentsMember
1322 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1323 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1324 Bank Member nwpc:NationalWestminsterBankPlcMember
1325 Contractual maturity of undiscounted cash flows payable LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1326 Contractual maturity period for undiscounted cash flows Concept (xbrli:durationItemType) For Period nwpc:ContractualMaturityPeriodForUndiscountedCashFlows
1327 Undiscounted cash flow payable Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
1328 Threshold period for principal amounts of financial liabilities to be excluded from contractual maturity for cash outflows Concept (xbrli:durationItemType) For Period nwpc:PeriodPrincipalAmountsOfFinancialLiabilitiesRepayableExcludedFromContractualMaturity
1329 Threshold period for interest payments of financial liabilities to be excluded from contractual maturity for cash outflows Concept (xbrli:durationItemType) For Period nwpc:PeriodInterestPaymentsOfFinancialLiabilitiesExcludedFromContractualMaturity
1330 Held-for-trading liabilities excluded from contractual maturity for cash outflows payable Concept (Monetary) As Of Credit nwpc:FinancialLiabilitiesClassifiedAsHeldForTradingExcludedFromContractualMaturity
1331 41101 - Disclosure - Financial assets - impairments - Provision for impairment losses (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialAssetsImpairmentsProvisionForImpairmentLossesDetails
1332 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1333 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
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1335 Individually assessed Member ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember
1336 Collectively assessed Member ifrs-full:FinancialAssetsCollectivelyAssessedForCreditLossesMember
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1338 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1339 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1340 Bank Member nwpc:NationalWestminsterBankPlcMember
1341 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1342 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1343 Continuing operations Member ifrs-full:ContinuingOperationsMember
1344 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1345 Financial assets - impairments LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1346 Movement in the provision for impairment losses on loans and advances Abstract ifrs-full:ReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
1347 At 1 January Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1348 Transfers from fellow subsidiaries Concept (Monetary) For Period Credit nwpc:TransfersFromFellowSubsidiariesAllowanceAccountForCreditLossesOfFinancialAssets
1349 Transfers to disposal groups Concept (Monetary) For Period Debit nwpc:TransfersToDisposalGroupsAllowanceAccountForCreditLossesOfFinancialAssets
1350 Currency translation and other adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
1351 Amounts written-off Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1352 Recoveries of amounts previously written-off Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1353 Charge/(release) to income statement Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1354 Unwind of discount (recognised in interest income) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAdjustmentsArisingFromPassageOfTimeAllowanceAccountForCreditLossesOfFinancialAssets
1355 At 31 December Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1356 41102 - Disclosure - Financial assets - impairments -Impairment charge/(release) to income statement (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialAssetsImpairmentsImpairmentChargeReleaseToIncomeStatementDetails
1357 Disclosure of impairment loss and reversal of impairment loss [table] Table

*

*

 ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossTable
1358 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1359 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1360 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
1361 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1362 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
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1364 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1365 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1366 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1367 UK Member ifrs-full:CountryOfDomicileMember
1368 Foreign Member ifrs-full:ForeignCountriesMember
1369 Impairment charge/(release) to the income statement LineItems ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems
1370 Loans and advances to customers Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1371 Charge/(release) to the income statement Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
1372 Gross income not recognised but which would have been recognised under the original terms of the impaired loans Concept (Monetary) For Period Credit ifrs-full:FairValueGainLossThatWouldHaveBeenRecognisedInProfitOrLossOrOtherComprehensiveIncomeIfFinancialAssetsHadNotBeenReclassifiedFirstApplicationOfIFRS9
1373 Interest on impaired loans included in net interest income Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnImpairedFinancialAssetsAccrued
1374 41103 - Disclosure - Financial assets - impairments - Impaired financial assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialAssetsImpairmentsImpairedFinancialAssetsDetails
1375 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1376 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1377 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1378 Bank Member nwpc:NationalWestminsterBankPlcMember
1379 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1380 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1381 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
1382 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1383 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1384 Impaired Financial Assets Member ifrs-full:FinancialAssetsImpairedMember
1385 Individually assessed Member ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember
1386 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1387 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1388 Cost Member ifrs-full:GrossCarryingAmountMember
1389 Provision Member ifrs-full:AccumulatedImpairmentMember
1390 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1391 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1392 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
1393 Financial assets - impairments LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1394 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1395 41104 - Disclosure - Financial assets - impairments - Carrying value of impaired financial assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureFinancialAssetsImpairmentsCarryingValueOfImpairedFinancialAssetsDetails
1396 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1397 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1398 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1399 Bank Member nwpc:NationalWestminsterBankPlcMember
1400 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1401 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1402 Available-for-sale Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1403 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1404 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1405 Equity shares Member ifrs-full:EquityInvestmentsMember
1406 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1407 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1408 Impaired Financial Assets Member ifrs-full:FinancialAssetsImpairedMember
1409 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1410 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1411 Assets obtained by taking possession of collateral or calling on other credit enhancements Concept (Monetary) As Of Debit ifrs-full:AssetsObtained
1412 41201 - Disclosure - Derivatives - Notional amount and fair value (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDerivativesNotionalAmountAndFairValueDetails
1413 Disclosure of financial instruments by type of interest rate [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable
1414 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1415 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1416 Bank Member nwpc:NationalWestminsterBankPlcMember
1417 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1418 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1419 Subsidiaries Member ifrs-full:SubsidiariesMember
1420 Intermediate holding company Member nwpc:RoyalBankOfScotlandPlcMember
1421 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1422 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1423 Spot, forwards and futures Member nwpc:SpotsForwardAndFuturesMember
1424 Inflation rate swaps Member ifrs-full:CurrencySwapContractMember
1425 Equity and bond call options Member ifrs-full:PurchasedCallOptionsMember
1426 Equity and bond put options Member ifrs-full:WrittenPutOptionsMember
1427 Interest rate swaps Member ifrs-full:InterestRateSwapContractMember
1428 Futures and forwards Member nwpc:FuturesAndForwardsMember
1429 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1430 Risks [member] Member ifrs-full:TypesOfRisksMember
1431 Exchange rate contracts Member ifrs-full:CurrencyRiskMember
1432 Interest rate contracts Member ifrs-full:InterestRateRiskMember
1433 Equity and commodity contracts Member nwpc:EquityAndCommodityPriceRiskMember
1434 Notional amount and fair value of the derivatives LineItems ifrs-full:DisclosureOfFinancialInstrumentsByTypeOfInterestRateLineItems
1435 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1436 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1437 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1438 41301 - Disclosure - Debt securities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDebtSecuritiesDetails
1439 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1440 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1441 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1442 Held-for-trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1443 Available-for-sale Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1444 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
1445 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1446 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1447 Debt securities Member ifrs-full:DebtSecuritiesMember
1448 Central and local Government Member nwpc:CentralAndLocalGovernmentMember
1449 Banks Member nwpc:BanksMember
1450 Other financial institutions Member nwpc:OtherMember
1451 Corporate Member nwpc:CorporatesMember
1452 ABS Member nwpc:AssetBackedSecuritiesBackedByUSFederalAgenciesAndGovernmentSponsoredEntitiesAndCoveredBondsMember
1453 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1454 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1455 UK Member country:GB
1456 USA Member country:US
1457 Other Country Member nwpc:CountriesOtherThanUsAndUkMember
1458 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1459 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1460 Continuing operations Member ifrs-full:ContinuingOperationsMember
1461 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1462 Maturity [axis] Axis ifrs-full:MaturityAxis
1463 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1464 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
1465 After 1 year but within 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1466 Debt securities LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1467 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
1468 Related yield on available-for-sale debt securities Concept (Percent) For Period nwpc:RelatedYieldOnAvailableForSaleDebtSecurities
1469 Gross unrealised gains Concept (Monetary) For Period Credit nwpc:IfrsAvailableForSaleDebtSecuritiesGrossUnrealizedGain
1470 Gross unrealised losses Concept (Monetary) For Period Debit nwpc:IfrsAvailableForSaleDebtSecuritiesGrossUnrealizedLoss
1471 41401 - Disclosure - Equity shares (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureEquitySharesDetails
1472 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1473 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1474 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1475 Bank Member nwpc:NationalWestminsterBankPlcMember
1476 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1477 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1478 Continuing operations Member ifrs-full:ContinuingOperationsMember
1479 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1480 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1481 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1482 Equity shares Member ifrs-full:TradingEquitySecuritiesMember
1483 Listed Member nwpc:EquitySharesListedOrTradedThroughStockExchangeMember
1484 Unlisted Member nwpc:EquitySharesNotListedOrTradedThroughStockExchangeMember
1485 Equity shares LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1486 Held-for-trading Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
1487 Designated as at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
1488 Available-for-sale Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
1489 Total financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1490 Gross unrealised gains Concept (Monetary) For Period Credit nwpc:IfrsAvailableForSaleEquitySecuritiesGrossUnrealizedGain
1491 Gross unrealised losses Concept (Monetary) For Period Debit nwpc:IfrsAvailableForSaleEquitySecuritiesGrossUnrealizedLoss
1492 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
1493 41501 - Disclosure - Investments in Group undertakings (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureInvestmentsInGroupUndertakingsDetails
1494 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
1495 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1496 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1497 Bank Member nwpc:NationalWestminsterBankPlcMember
1498 Acquisitions and disposals LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
1499 At 1 January Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1500 Currency translation and other adjustments Concept (Monetary) For Period Credit nwpc:AdjustmentsForCurrentTranslationAndOthersInGroupUndertakings
1501 Additional investments in Group undertakings Concept (Monetary) For Period Credit nwpc:AdditionalInvestmentsInGroupUndertakings
1502 Acquisitions Concept (Monetary) For Period Credit nwpc:AcquisitionsInvestmentsInGroupUndertakings
1503 Disposals Concept (Monetary) For Period Debit nwpc:DisposalsInvestmentsInGroupUndertakings
1504 (Impairment)/write back of investments Concept (Monetary) For Period Credit nwpc:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentInSubsidiaries
1505 At 31 December Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1506 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
1507 Capital contributions Concept (Monetary) For Period Debit nwpc:CapitalContributions
1508 41601 - Disclosure - Intangible assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureIntangibleAssetsDetails
1509 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
1510 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1511 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
1512 Goodwill Member ifrs-full:GoodwillMember
1513 Other Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1514 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1515 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1516 Continuing operations Member ifrs-full:ContinuingOperationsMember
1517 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1518 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1519 Cost Member ifrs-full:GrossCarryingAmountMember
1520 Accumulated impairment, depreciation and amortisation Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1521 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1522 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1523 Bank Member nwpc:NationalWestminsterBankPlcMember
1524 Intangible assets LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
1525 Intangible assets Abstract ifrs-full:ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
1526 At 1 January Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1527 Transfers to disposal groups Concept (Monetary) For Period Debit nwpc:IncreaseDecreaseThroughTransferToDisposalGroupsIntangibleAssetsAndGoodwill
1528 Transfer from/to fellow subsidiaries Concept (Monetary) For Period Debit nwpc:IncreaseDecreaseThroughTransferToFromFellowSubsidiariesIntangibleAssetsAndGoodwill
1529 Currency translation and other adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
1530 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1531 Disposals and write-off of fully amortised assets Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsIntangibleAssetsAndGoodwill
1532 Charge for the year Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1533 Write down of goodwill and other intangible assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
1534 At 31 December Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1535 Carrying value of goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1536 41701 - Disclosure - Property, plant and equipment (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePropertyPlantAndEquipmentDetails
1537 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1538 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1539 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1540 Investment properties Member ifrs-full:InvestmentPropertyMember
1541 Freehold premises Member nwpc:FreeHoldPremisesMember
1542 Long leasehold premises Member nwpc:LongLeaseholdPremisesMember
1543 Short leasehold premises Member nwpc:ShortLeaseholdPremisesMember
1544 Computers leasehold premises Member nwpc:ComputersLeaseholdPremisesMember
1545 Other equipment Member ifrs-full:OtherPropertyPlantAndEquipmentMember
1546 Operating lease assets Member ifrs-full:PropertyPlantAndEquipmentSubjectToOperatingLeasesMember
1547 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1548 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1549 Cost Member ifrs-full:GrossCarryingAmountMember
1550 Accumulated impairment, depreciation and amortisation Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1551 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1552 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1553 Continuing operations Member ifrs-full:ContinuingOperationsMember
1554 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1555 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1556 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1557 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1558 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1559 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1560 Bank Member nwpc:NationalWestminsterBankPlcMember
1561 Property, plant and equipment LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1562 Property, plant and equipment Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
1563 At 1 January Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1564 Transfers to disposal groups Concept (Monetary) For Period Debit nwpc:IncreaseDecreaseThroughTransferToDisposalGroupsPropertyPlantAndEquipment
1565 Currency translation and other adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
1566 Purchase of Nordisk properties from intermediate holding company Concept (Monetary) For Period Debit nwpc:IncreaseDecreaseThroughTransfersFromHoldingCompanyPropertyPlantAndEquipment
1567 Transfers from/to fellow subsidiaries Concept (Monetary) For Period Debit nwpc:TransfersFromToFellowSubsidiariesPropertyPlantAndEquipment
1568 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1569 Change in fair value of investment properties - continuing operations Concept (Monetary) For Period Debit ifrs-full:RevaluationIncreaseDecreasePropertyPlantAndEquipment
1570 Disposals and write-off of fully depreciated assets Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
1571 Charge for the year Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1572 Write back of property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1573 At 31 December Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1574 Fair value percentage of investment property classified Concept (Percent) For Period nwpc:PercentageOfPropertyClassifiedUnderDifferentMarketLevels
1575 Residual value Concept (Monetary) For Period Debit nwpc:ResidualValue
1576 Fair value of property Concept (Monetary) For Period Debit nwpc:FairValueOfInvestmentPropertyBasedOnValuationByIndependentValuer
1577 Rental income from investment property Concept (Monetary) For Period Credit ifrs-full:RentalIncomeFromInvestmentProperty
1578 Direct operating expenses of investment properties Concept (Monetary) For Period Debit ifrs-full:DirectOperatingExpenseFromInvestmentProperty
1579 41801 - Disclosure - Prepayments, accrued income and other assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosurePrepaymentsAccruedIncomeAndOtherAssetsDetails
1580 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
1581 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1582 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1583 Bank Member nwpc:NationalWestminsterBankPlcMember
1584 Acquisitions and disposals LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
1585 Prepayments Concept (Monetary) As Of Debit ifrs-full:Prepayments
1586 Accrued income Concept (Monetary) As Of Debit ifrs-full:AccruedIncome
1587 Tax recoverable Concept (Monetary) As Of Debit ifrs-full:ReceivablesFromTaxesOtherThanIncomeTax
1588 Pension schemes in net surplus Concept (Monetary) As Of Debit ifrs-full:RecognisedAssetsDefinedBenefitPlan
1589 Interests in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1590 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
1591 Total Concept (Monetary) As Of Debit nwpc:TotalPrepaymentsAccruedIncomeAndOtherAssets
1592 41901 - Disclosure - Discontinued operations and assets and liabilities of disposal groups - Profit from discontinued operations, net of tax (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDiscontinuedOperationsAndAssetsAndLiabilitiesOfDisposalGroupsProfitFromDiscontinuedOperationsNetOfTaxDetails
1593 Noncurrent Assets or Disposal Groups Classified As Held for Sale [Table] Table

*

*

 nwpc:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleTable
1594 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1595 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1596 NWGH Member nwpc:NatwestGroupHoldingsCorpMember
1597 UBIH Member nwpc:UlsterBankIrelandHoldingsUnlimitedCompanyMember
1598 Noncurrent assets or disposal groups classified as held for sale LineItems nwpc:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleLineItems
1599 Interest income Concept (Monetary) For Period Credit nwpc:RevenueFromInterestDiscontinuedOperations
1600 Interest expense Concept (Monetary) For Period Debit nwpc:InterestExpenseDiscontinuedOperations
1601 Net interest income Concept (Monetary) For Period Credit nwpc:InterestIncomeExpenseFromDiscontinuedOperations
1602 Other income Concept (Monetary) For Period Credit nwpc:NoninterestIncomeExpenseDiscontinuedOperations
1603 Total income Concept (Monetary) For Period Credit ifrs-full:RevenueDiscontinuedOperations
1604 Operating expenses Concept (Monetary) For Period Debit nwpc:OperatingExpenseDiscontinuedOperations
1605 (Loss)/profit before impairment losses Concept (Monetary) For Period Credit nwpc:ProfitLossBeforeTaxAndImpairmentLossReversalOfImpairmentLossDiscontinuedOperations
1606 Impairment losses Concept (Monetary) For Period Debit nwpc:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossDiscontinuedOperations
1607 Operating profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTaxDiscontinuedOperations
1608 Tax credit/(charge) Concept (Monetary) For Period Credit nwpc:TaxCreditExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations
1609 Profit from discontinued operations, net of tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
1610 Other comprehensive profit Concept (Monetary) For Period Credit nwpc:OtherComprehensiveProfitLossDiscontinuedOperations
1611 41902 - Disclosure - Discontinued operations and assets and liabilities of disposal groups - Operating cash flows attributable to discontinued operations (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDiscontinuedOperationsAndAssetsAndLiabilitiesOfDisposalGroupsOperatingCashFlowsAttributableToDiscontinuedOperationsDetails
1612 Implied Table Table

*

*

 implied:Table
1613 Discontinued operations and assets and liabilities of disposal groups Abstract ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwnersAbstract
1614 Net cash flows from operating activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations
1615 Net cash flows from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations
1616 Net cash flows from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations
1617 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsDiscontinuedOperations
1618 41903 - Disclosure - Discontinued operations and assets and liabilities of disposal groups - Assets and liabilities of disposal groups Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDiscontinuedOperationsAndAssetsAndLiabilitiesOfDisposalGroupsAssetsAndLiabilitiesOfDisposalGroupsDetails
1619 Noncurrent Assets or Disposal Groups Classified As Held for Sale [Table] Table

*

*

 nwpc:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleTable
1620 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1621 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1622 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1623 Noncurrent assets or disposal groups classified as held for sale LineItems nwpc:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleLineItems
1624 Assets of disposal groups Abstract nwpc:AssetsOfDisposalGroupsAbstract
1625 Cash and balances at central banks Concept (Monetary) As Of Debit ifrs-full:CashAndBankBalancesAtCentralBanks
1626 Loans and advances to banks Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToBanks
1627 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
1628 Debt securities and equity shares Concept (Monetary) As Of Debit nwpc:DebtInstrumentsHeldAndInvestmentsAccountedForUsingEquityMethod
1629 Derivatives Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1630 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1631 Settlement balances Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
1632 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
1633 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1634 Deposits by banks Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
1635 Customer accounts Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
1636 Derivatives Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1637 Debt securities in issue Concept (Monetary) As Of Credit ifrs-full:Borrowings
1638 Subordinated liabilities Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
1639 Settlement balances Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1640 Short positions Concept (Monetary) As Of Credit nwpc:DerivativeFinancialLiabilitiesShortPosition
1641 Provisions for liabilities and charges Concept (Monetary) As Of Credit ifrs-full:Provisions
1642 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
1643 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1644 42001 - Disclosure - Short positions (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureShortPositionsDetails
1645 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
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1649 Other issuers Member nwpc:DebtSecuritiesOtherIssuersMember
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1651 Short positions Concept (Monetary) As Of Credit nwpc:DerivativeFinancialLiabilitiesShortPosition
1652 42101 - Disclosure - Provision for liabilities and charges (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureProvisionForLiabilitiesAndChargesDetails
1653 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
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1663 Property and other Member nwpc:PropertyAndOtherMember
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1667 Administrative expenses Member nwpc:AdministrativeProvisionMember
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1671 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
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1674 At 1 January 2016 Concept (Monetary) As Of Credit ifrs-full:Provisions
1675 Transfer to disposal groups Concept (Monetary) For Period Debit nwpc:ProvisionTransferToDisposalGroups
1676 Acquisition of business Concept (Monetary) For Period Credit ifrs-full:AcquisitionsThroughBusinessCombinationsOtherProvisions
1677 Currency translation and other movements Concept (Monetary) For Period Credit nwpc:IncreaseDecreaseThroughNetExchangeDifferencesProvisions
1678 Charge to income statement Concept (Monetary) For Period Credit nwpc:AdditionalProvisions
1679 Releases to income statement Concept (Monetary) For Period Debit nwpc:ProvisionsReleasesToIncomeStatement
1680 Provision utilised Concept (Monetary) For Period Debit nwpc:ProvisionsUsed
1681 At 31 December 2016 Concept (Monetary) As Of Credit ifrs-full:Provisions
1682 Increase (decrease) in other provisions Concept (Monetary) For Period Credit ifrs-full:ChangesInOtherProvisions
1683 Percentage of provision paid Concept (Percent) For Period nwpc:PercentageOfProvision
1684 42102 - Disclosure - Provisions for liabilities and charges - Sensitivity (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureProvisionsForLiabilitiesAndChargesSensitivityDetails
1685 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
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1692 Processing costs per claim Member nwpc:ProcessingCostsPerClaimMember
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1701 Minimum Member ifrs-full:BottomOfRangeMember
1702 Maximum Member ifrs-full:TopOfRangeMember
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1708 Change in assumption (as a percent) Concept (Percent) For Period nwpc:IncreaseDecreaseInAssumptionPercentage
1709 Change in provisions Concept (Monetary) For Period Credit ifrs-full:ChangesInOtherProvisions
1710 42103 - Disclosure - Provision for liabilities and charges - Other (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureProvisionForLiabilitiesAndChargesOtherDetails
1711 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
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1722 Restructuring provision Member ifrs-full:RestructuringProvisionMember
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1730 Counterparties [member] Member ifrs-full:CounterpartiesMember
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1734 Provisions made Concept (Monetary) For Period Credit nwpc:AdditionalProvisions
1735 Provisions for liabilities Concept (Monetary) As Of Credit ifrs-full:Provisions
1736 Settlement amount Concept (Monetary) For Period Credit nwpc:LitigationSettlementValue
1737 Settlement amount paid Concept (Monetary) For Period Credit nwpc:LitigationSettlementPaid
1738 Settlement amount reimbursed Concept (Monetary) For Period Debit nwpc:SettlementAmountReimbursed
1739 Provision utilised Concept (Monetary) For Period Debit nwpc:ProvisionsUsed
1740 42201 - Disclosure - Accruals and other liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAccrualsAndOtherLiabilitiesDetails
1741 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
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1743 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1744 Bank Member nwpc:NationalWestminsterBankPlcMember
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1746 Notes in circulation Concept (Monetary) As Of Credit ifrs-full:CurrentNotesAndDebenturesIssuedAndCurrentPortionOfNoncurrentNotesAndDebenturesIssued
1747 Current tax Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
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1749 Deferred income Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
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1751 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
1752 Accruals and other liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
1753 42301 - Disclosure - Deferred tax (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDeferredTaxDetails
1754 Income tax disclosure [table] Table

*

*

 nwpc:IncomeTaxDisclosureTable
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1761 Deferred tax asset Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1762 Net deferred tax asset Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1763 42302 - Disclosure - Deferred tax - Net deferred tax asset (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDeferredTaxNetDeferredTaxAssetDetails
1764 Income tax disclosure [table] Table

*

*

 nwpc:IncomeTaxDisclosureTable
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1766 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
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1769 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1770 Continuing operations Member ifrs-full:ContinuingOperationsMember
1771 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
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1773 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1774 Pension Member nwpc:DeferredTaxPensionMember
1775 Accelerated capital allowances Member nwpc:DeferredTaxAcceleratedCapitalAllowancesMember
1776 Provisions Member nwpc:DeferredTaxProvisionsMember
1777 Deferred gains Member nwpc:DeferredTaxDeferredGainsMember
1778 Available-for-sale financial assets Member nwpc:DeferredTaxAsFinancialAssetsMember
1779 Cash flow hedging Member nwpc:DeferredTaxCashFlowHedgingMember
1780 Total losses carried forward Member ifrs-full:UnusedTaxLossesMember
1781 Other Member ifrs-full:OtherTemporaryDifferencesMember
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1783 Reconciliation of net deferred tax asset Abstract ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
1784 Deferred tax liability (asset) at beginning of period Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1785 Acquisitions and disposals of subsidiaries Concept (Monetary) For Period Credit nwpc:IncreaseDecreaseThroughBusinessCombinationsAndLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset
1786 (Credit)/charge to income statement Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1787 Charge/(credit) to other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1788 Currency translation and other adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
1789 Deferred tax liability (asset) at end of period Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1790 42303 - Disclosure - Deferred tax - Tax losses (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDeferredTaxTaxLossesDetails
1791 Income tax disclosure [table] Table

*

*

 nwpc:IncomeTaxDisclosureTable
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1793 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1794 Total losses carried forward Member ifrs-full:UnusedTaxLossesMember
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1800 Bank Member nwpc:NationalWestminsterBankPlcMember
1801 Ulster Bank Member nwpc:UlsterBankMember
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1803 Unused tax losses Abstract ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract
1804 Deferred tax asset Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1805 42304 - Disclosure - Deferred tax - Other (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDeferredTaxOtherDetails
1806 Income tax disclosure [table] Table

*

*

 nwpc:IncomeTaxDisclosureTable
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1816 Total losses carried forward Member ifrs-full:UnusedTaxLossesMember
1817 Maturity [axis] Axis ifrs-full:MaturityAxis
1818 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1819 After 5 years Member nwpc:AfterFiveYearsMember
1820 Income tax disclosure [line items] LineItems nwpc:IncomeTaxDisclosureLineItems
1821 Deferred tax Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
1822 Percentage of profits can be carried forward to offset the losses Concept (Percent) For Period nwpc:PercentageOfProfitsCanBeCarriedToOffsetLosses
1823 Corporation tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1824 Banking Surcharge Rate Concept (Percent) For Period nwpc:BankingSurchargeRate
1825 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1826 Profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1827 Tax losses carried forward Concept (Monetary) As Of Debit nwpc:IfrsOperatingLossCarryforwards
1828 Reduction in annual profits Concept (Monetary) For Period Debit nwpc:ReductionInAnnualProfitsThatWouldExtendRecoveryOfDeferredTaxAssets
1829 Deferred tax assets that have not been recognised Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1830 Tax losses and other temporary differences carried forward Concept (Monetary) As Of Debit nwpc:OperatingLossAndOtherTemporaryDifferencesCarryforwards
1831 Deferred tax liabilities that have not been recognised Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1832 42401 - Disclosure - Subordinated liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSubordinatedLiabilitiesDetails
1833 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1834 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1835 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1836 Bank Member nwpc:NationalWestminsterBankPlcMember
1837 Subordinated liabilities LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1838 Dated loan capital Concept (Monetary) As Of Credit ifrs-full:DatedSubordinatedLiabilities
1839 Undated loan capital Concept (Monetary) As Of Credit ifrs-full:UndatedSubordinatedLiabilities
1840 Preference shares Concept (Monetary) As Of Credit nwpc:PreferenceSharesClassifiedAsLiabilities
1841 Subordinated liabilities Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
1842 42402 - Disclosure - Subordinated liabilities - Contractual maturities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSubordinatedLiabilitiesContractualMaturitiesDetails
1843 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
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1851 Euro Member nwpc:IfrsEuroMemberCountriesEuroMember
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1855 Final redemption Member nwpc:RedemptionDateMember
1856 Call date Member nwpc:CallDateMember
1857 Maturity [axis] Axis ifrs-full:MaturityAxis
1858 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1859 Currently Member nwpc:CurrentlyMember
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1861 After 1 year but within 2 years Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1862 After 2 years but within 5 years Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1863 5-10 years Member ifrs-full:LaterThanFiveYearsAndNotLaterThanTenYearsMember
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1866 Subordinated liabilities Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
1867 42403 - Disclosure - Subordinated liabilities - Redemption (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSubordinatedLiabilitiesRedemptionDetails
1868 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1869 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1870 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1871 Preference shares Member ifrs-full:PreferenceSharesMember
1872 Non-cumulative preference shares of 1 Member nwpc:NonCumulativePreferenceShares1Member
1873 Non-cumulative preference shares of US$25 Member nwpc:NonCumulativePreferenceSharesUS25Member
1874 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1875 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1876 National Westminster Bank, Plc, SEK 3 million dated notes Member nwpc:NationalWestminsterBankPlcSek3MillionDatedNotesMember
1877 National Westminster Bank Plc, US$ 300 million 8.6250% non-cumulative preference shares (callable) Member nwpc:NationalWestminsterBankPlcUsd300Million8.625NonCumulativePreferenceSharesCallableMember
1878 Coutts & Company, 20 million floating rate subordinated loan capital 2023 Member nwpc:CouttsCompanyEuro20MillionFloatingRateSubordinatedLoanCapital2023Member
1879 Coutts & Company, 30 million floating rate subordinated loan capital - 2023 Member nwpc:CouttsCompanyEuro30MillionFloatingRateSubordinatedLoanCapital2023Member
1880 Coutts & Company, 13.3 million 0.7294% undated subordinated notes Member nwpc:CouttsCompanyPoundSterling13.3Million0.7294PercentUndatedSubordinatedNotesMember
1881 Coutts & Company, US$ 15 million 0.4691% undated subordinated notes Member nwpc:CouttsCompanyUs15Million0.4691PercentUndatedSubordinatedNotesMember
1882 Ulster Bank Limited, 100 million floating rate subordinated loan capital 2019 Member nwpc:UlsterBankLimitedPoundSterling100MillionFloatingRateSubordinatedLoanCapital2019Member
1883 Ulster Bank Limited, 120 million perpetual floating rate notes 2020 Member nwpc:UlsterBankLimitedEuro120MillionPerpetualFloatingRateNotes2020Member
1884 Ulster Bank Limited, 60 million perpetual floating rate notes 2020 Member nwpc:UlsterBankLimitedEuro60MillionPerpetualFloatingRateNotes2020Member
1885 Ulster Bank Limited, 280 million subordinated loan capital December 2022 Member nwpc:UlsterBankLimitedEuro280MillionSubordinatedLoanCapitalDecember2022Member
1886 Ulster Bank Limited, 400 million subordinated loan December 2017 Member nwpc:UlsterBankLimitedEuro400MillionSubordinatedLoanDecember2017Member
1887 National Westminster Bank Plc, Pound Sterling 300 million 6.50% notes 2021 (not callable) Member nwpc:NationalWestminsterBankPlc300Million6.50Notes2021NotCallableMember
1888 National Westminster Bank Plc, Pound Sterling 2,000 million floating rate notes 2023 (callable January 2018) Member nwpc:NationalWestminsterBankPlc2000MillionFloatingRateNotes2023CallableJanuary2018Member
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1890 National Westminster Bank Plc, US$193 million floating rate notes (callable semi-annually) Member nwpc:NationalWestminsterBankPlcUs193MillionFloatingRateNotesCallableSemiAnnuallyMember
1891 National Westminster Bank Plc, US$229 million floating rate notes (callable semi-annually) Member nwpc:NationalWestminsterBankPlcUs229MillionFloatingRateNotesCallableSemiAnnuallyMember
1892 National Westminster Bank Plc, US$285 million floating rate notes (callable semi-annually) Member nwpc:NationalWestminsterBankPlcUs285MillionFloatingRateNotesCallableSemiAnnuallyMember
1893 National Westminster Bank Plc, 178 million floating rate notes (callable quarterly) Member nwpc:NationalWestminsterBankPlcEuro178MillionFloatingRateNotesCallableQuarterlyMember
1894 National Westminster Bank Plc, 100 million floating rate notes (callable quarterly) Member nwpc:NationalWestminsterBankPlcEuro100MillionFloatingRateNotesCallableQuarterlyMember
1895 National Westminster Bank Plc, Pound Sterling 53 million 7.125% notes (callable every five years from October 2022) Member nwpc:NationalWestminsterBankPlc53Million7.13NotesCallableEveryFiveYearsFromOctober2022Member
1896 National Westminster Bank Plc, Pound Sterling 35 million 11.50% notes (callable December 2022) Member nwpc:NationalWestminsterBankPlc35Million11.50NotesCallableDecember2022Member
1897 National Westminster Bank Plc, Pound Sterling 700 million floating rate notes (callable every five years from January 2018) Member nwpc:NationalWestminsterBankPlc700MillionFloatingRateNotesCallableEveryFiveYearsFromJanuary2018Member
1898 National Westminster Bank Plc, Pound Sterling 700 million floating rate notes (callable quarterly from September 2016) Member nwpc:NationalWestminsterBankPlc700MillionFloatingRateNotesCallableQuarterlyFromSeptember2016Member
1899 National Westminster Bank Plc, Pound Sterling 140 million 9.00% Series A non-cumulative preference shares of 1 (not callable) Member nwpc:NationalWestminsterBankPlc140Million9.00SeriesNonCumulativePreferenceSharesOf1NotCallableMember
1900 US$300 million 8.625% Series C non-cumulative preference shares of US$25 (callable quarterly) Member nwpc:NationalWestminsterBankPlcUs300Million8.625SeriesCNonCumulativePreferenceSharesOfUs25CallableQuarterlyMember
1901 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
1902 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
1903 National Westminster Bank Plc, Coutts & Company and Ulster Bank Limited Member nwpc:NationalWestminsterBankPlcCouttsCompanyAndUlsterBankLimitedMember
1904 Bank Member nwpc:NationalWestminsterBankPlcMember
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1906 Ulster Bank Limited Member nwpc:UlsterBankLimitedMember
1907 Range [axis] Axis ifrs-full:RangeAxis
1908 Ranges [member] Member ifrs-full:RangesMember
1909 Maximum Member ifrs-full:TopOfRangeMember
1910 Subordinated liabilities LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1911 Transfers from fellow subsidiaries Concept (Monetary) For Period ifrs-full:TransfersUnderFinanceAgreementsToEntityRelatedPartyTransactions
1912 Redemption of subordinated liabilities Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfSubordinatedLiabilities
1913 Dated loan capital Concept (Monetary) As Of Credit ifrs-full:DatedSubordinatedLiabilities
1914 Undated loan capital Concept (Monetary) As Of Credit ifrs-full:UndatedSubordinatedLiabilities
1915 Preference shares Concept (Monetary) As Of Credit nwpc:PreferenceSharesClassifiedAsLiabilities
1916 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1917 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1918 Percentage of gross exchangeable at the option of issuer Concept (Percent) For Period nwpc:PercentageOfGrossSubordinatedLiabilityExchangeableAtOptionOfIssuer
1919 Par value Concept (Share) As Of ifrs-full:ParValuePerShare
1920 42501 - Disclosure - Share capital and reserves (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureShareCapitalAndReservesDetails
1921 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1922 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1923 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1924 Ordinary shares of 1 Member ifrs-full:OrdinarySharesMember
1925 Preference shares Member ifrs-full:PreferenceSharesMember
1926 Non-cumulative preference shares of 1 Member nwpc:NonCumulativePreferenceShares1Member
1927 Non-cumulative preference shares of US$25 Member nwpc:NonCumulativePreferenceSharesUS25Member
1928 Share capital and reserves LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1929 Value of shares Concept (Monetary) As Of Credit ifrs-full:Equity
1930 Number of shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1931 Par value Concept (Share) As Of ifrs-full:ParValuePerShare
1932 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
1933 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1934 Capital redemption reserve Concept (Monetary) As Of Credit ifrs-full:CapitalRedemptionReserve
1935 Capital contributions received Concept (Monetary) For Period Credit nwpc:CapitalContributionsReceivedWithNoSharesIssued
1936 Additional share capital issued Concept (Monetary) As Of Credit us-gaap:AdditionalPaidInCapital
1937 42601 - Disclosure - Leases (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureLeasesDetails
1938 Disclosure of finance lease and operating lease by lessor [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorTable
1939 Maturity [axis] Axis ifrs-full:MaturityAxis
1940 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1941 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
1942 After 1 year but within 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1943 After 5 years Member ifrs-full:LaterThanFiveYearsMember
1944 Minimum amounts receivable under non-cancellable leases LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorLineItems
1945 Gross amounts Concept (Monetary) As Of Debit nwpc:GrossInvestmentInFinanceLeaseAndHirePurchases
1946 Present value adjustments Concept (Monetary) As Of Credit nwpc:PresentValueAdjustmentsOnFinanceLeaseAndHirePurchase
1947 Other movements Concept (Monetary) As Of Credit nwpc:OtherMovementsOnFinanceLeaseAndHirePurchases
1948 Future drawdowns Concept (Monetary) As Of Credit nwpc:FutureDrawdownsOnFinanceLeaseAndHirePurchases
1949 Present value Concept (Monetary) As Of Debit nwpc:MinimumFinanceLeaseAndHirePurchasesPaymentsReceivableAtPresentValue
1950 Future minimum lease rentals Concept (Monetary) As Of Debit ifrs-full:MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
1951 42602 - Disclosure - Leases - Other (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureLeasesOtherDetails
1952 Disclosure of finance lease and operating lease by lessor [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorTable
1953 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1954 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1955 Property, plant and equipment under operating leases [member] Member ifrs-full:PropertyPlantAndEquipmentUnderOperatingLeasesMember
1956 Transportation Member nwpc:TransportationUnderOperatingLeasesMember
1957 Cars and light commercial vehicles Member nwpc:CarsAndLightCommercialVehiclesUnderOperatingLeasesMember
1958 Other Member nwpc:OtherAssetsUnderOperatingLeasesMember
1959 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1960 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
1961 Continuing operations Member ifrs-full:ContinuingOperationsMember
1962 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
1963 Leases LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorLineItems
1964 Operating lease asset Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
1965 Amounts recognised as income and expense - Finance leases - contingent rental income Concept (Monetary) For Period Credit ifrs-full:ContingentRentsRecognisedAsIncomeClassifiedAsFinanceLease
1966 Amounts recognised as income and expense - Operating leases - minimum rentals payable Concept (Monetary) For Period Credit ifrs-full:ContingentRentsRecognisedAsIncomeClassifiedAsOperatingLease
1967 Finance lease contracts and hire purchase agreements Abstract nwpc:FinanceLeaseContractsAndHirePurchaseAgreementsAbstract
1968 Accumulated allowance for uncollectable minimum receivables Concept (Monetary) As Of Credit ifrs-full:AccumulatedAllowanceForUncollectibleMinimumLeasePaymentsReceivable
1969 42603 - Disclosure - Leases - Residual value exposures (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureLeasesResidualValueExposuresDetails
1970 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1971 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1972 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1973 Property, plant and equipment under operating leases [member] Member ifrs-full:PropertyPlantAndEquipmentUnderOperatingLeasesMember
1974 Transportation Member nwpc:TransportationUnderOperatingLeasesMember
1975 Cars and light commercial vehicles Member nwpc:CarsAndLightCommercialVehiclesUnderOperatingLeasesMember
1976 Other Member nwpc:OtherAssetsUnderOperatingLeasesMember
1977 Maturity [axis] Axis ifrs-full:MaturityAxis
1978 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1979 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
1980 After 1 year but within 2 years Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1981 After 2 years but within 5 years Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1982 After 5 years Member ifrs-full:LaterThanFiveYearsMember
1983 Residual value exposures LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1984 Discounted unguaranteed residual value of assets subject to finance lease Concept (Monetary) As Of Debit ifrs-full:DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease
1985 Unguaranteed residual values of operating leases Concept (Monetary) As Of Debit nwpc:UnguaranteedResidualValueOfAssetsSubjectToOperatingLease
1986 Unguaranteed residual values of hire purchase agreements Concept (Monetary) As Of Debit nwpc:UnguaranteedResidualValueOfAssetsSubjectToHirePurchaseAgreement
1987 Unguaranteed residual values Concept (Monetary) As Of Debit nwpc:UnguaranteedResidualValueOfAssets
1988 42701 - Disclosure - Structured entities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureStructuredEntitiesDetails
1989 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
1990 Consolidated structured entities [axis] Axis ifrs-full:ConsolidatedStructuredEntitiesAxis
1991 Entity's total for consolidated structured entities [member] Member ifrs-full:EntitysTotalForConsolidatedStructuredEntitiesMember
1992 Consolidated structured entities Member ifrs-full:ConsolidatedStructuredEntitiesMember
1993 Held by Third party Member nwpc:ThirdPartyMember
1994 RBS Group Member nwpc:RbsGroupMember
1995 Transferred financial assets that are not derecognised in their entirety [axis] Axis ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionAxis
1996 Transferred financial assets that are not derecognised in their entirety [member] Member ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionMember
1997 Securitisations Member ifrs-full:SecuritisationsMember
1998 Covered Bond Programme Member nwpc:CoveredBondProgrammeMember
1999 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2000 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2001 UK mortgages Member nwpc:UkMortgagesMember
2002 Irish mortgages Member nwpc:IrishMortgagesMember
2003 US mortgages Member nwpc:UsMortgagesMember
2004 Acquisitions and disposals LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
2005 Assets excluding cash deposits Concept (Monetary) As Of Debit nwpc:AssetsExcludingCashDepositsThatEntityContinuesToRecognise
2006 Cash deposits Concept (Monetary) As Of Debit nwpc:CashDepositsThatEntityContinuesToRecognise
2007 Total assets Concept (Monetary) As Of Debit ifrs-full:AssetsThatEntityContinuesToRecognise
2008 Debt securities in issue Concept (Monetary) As Of Credit ifrs-full:Borrowings
2009 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
2010 42702 - Disclosure - Structured entities - Unconsolidated structured entities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureStructuredEntitiesUnconsolidatedStructuredEntitiesDetails
2011 Disclosure of unconsolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesTable
2012 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2013 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2014 Debt securities Member ifrs-full:DebtSecuritiesMember
2015 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
2016 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
2017 Unconsolidated structured entities Member ifrs-full:UnconsolidatedStructuredEntitiesMember
2018 Asset backed securitisation vehicles Member ifrs-full:SecuritisationVehiclesMember
2019 Investment funds and other Member ifrs-full:InvestmentFundsMember
2020 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2021 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2022 Loans and advances to customers Member nwpc:LoansAndAdvancesToCustomersMember
2023 Derivatives Member ifrs-full:DerivativesMember
2024 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2025 Financial liabilities Member ifrs-full:FinancialLiabilitiesMember
2026 Derivatives Member ifrs-full:DerivativesMember
2027 Unconsolidated structured entities LineItems ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesLineItems
2028 Assets recognised related to structured entities Concept (Monetary) As Of Debit ifrs-full:AssetsRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities
2029 Liabilities recognised related to structured entities Concept (Monetary) As Of Credit ifrs-full:LiabilitiesRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities
2030 Liquidity facilities/loan commitments Concept (Monetary) As Of Debit nwpc:LiquidityFacilitiesOrLoanCommitmentsRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities
2031 Guarantees Concept (Monetary) As Of Debit nwpc:GuaranteesRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities
2032 Total exposure Concept (Monetary) As Of ifrs-full:MaximumExposureToLossFromInterestsInStructuredEntities
2033 Assets transferred to sponsored entities Concept (Monetary) For Period Credit ifrs-full:AssetsTransferredToStructuredEntitiesAtTimeOfTransfer
2034 Income arising from sponsored entities Concept (Monetary) For Period Credit ifrs-full:IncomeFromStructuredEntities
2035 42801 - Disclosure - Asset transfers (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAssetTransfersDetails
2036 Disclosure of transferred financial assets that are not derecognised in their entirety [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionTable
2037 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2038 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2039 Debt securities Member ifrs-full:DebtSecuritiesMember
2040 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2041 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2042 Bank Member nwpc:NationalWestminsterBankPlcMember
2043 RBS Group Member nwpc:RbsGroupMember
2044 Transferred financial assets that are not derecognised in their entirety [axis] Axis ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionAxis
2045 Transferred financial assets that are not derecognised in their entirety [member] Member ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionMember
2046 Securities repurchase agreements or securities lending transactions Member ifrs-full:SecuritiesLendingMember
2047 Securitisations Member ifrs-full:SecuritisationsMember
2048 Covered Bond Programme Member nwpc:CoveredBondProgrammeMember
2049 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2050 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2051 UK mortgages Member nwpc:UkMortgagesMember
2052 Asset transfers LineItems ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionLineItems
2053 Fair value of transferred financial asset not derecognised Concept (Monetary) As Of Debit ifrs-full:FairValueOfTransferredFinancialAssetsThatAreNotDerecognisedInTheirEntirety
2054 Asset that entity continue to recognise Concept (Monetary) As Of Debit ifrs-full:AssetsThatEntityContinuesToRecognise
2055 Associated liability that entity continue to recognise Concept (Monetary) As Of Credit ifrs-full:AssociatedLiabilitiesThatEntityContinuesToRecognise
2056 42901 - Disclosure - Capital resources (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureCapitalResourcesDetails
2057 Disclosure of objectives, policies and processes for managing capital [table] Table

*

*

 ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalTable
2058 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2059 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2060 Bank Member nwpc:NationalWestminsterBankPlcMember
2061 Capital resources LineItems ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalLineItems
2062 Shareholders' equity (excluding non-controlling interests) Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
2063 Regulatory adjustments and deductions Abstract nwpc:RegulatoryAdjustmentsAndDeductionsAbstract
2064 Defined benefit pension fund adjustment Concept (Monetary) As Of Debit nwpc:DefinedBenefitPensionFundAdjustment
2065 Deferred tax assets Concept (Monetary) As Of Debit nwpc:AdjustmentOfDeferredTaxAssets
2066 Prudential valuation adjustments Concept (Monetary) As Of Debit nwpc:AdjustmentOfPrudentialValuation
2067 Qualifying deductions exceeding AT1 capital Concept (Monetary) As Of Debit nwpc:AdjustmentOfExcessQualifyingDeductionsOverAdditionalTier1At1Capital
2068 Goodwill and other intangible assets Concept (Monetary) As Of Debit nwpc:AdjustmentOfGoodwillAndOtherIntangibleAssets
2069 Expected losses less impairments Concept (Monetary) As Of Debit nwpc:AdjustmentOfNetExpectedLossesAfterImpairment
2070 Instruments of financial sector entities where the institution has a significant investment Concept (Monetary) As Of Debit nwpc:AdjustmentOfInstrumentsOfFinancialSectorEntitiesSignificantInvestment
2071 Significant investments in excess of secondary capital Concept (Monetary) As Of Debit nwpc:AdjustmentOfSignificantInvestmentsOverSecondaryCapital
2072 Other regulatory adjustments Concept (Monetary) As Of Credit nwpc:AdjustmentOfOtherRegulatoryRequirements
2073 Total regulatory adjustments and deductions Concept (Monetary) As Of Credit nwpc:TotalAdjustmentsAndDeductionsToEquityCapital
2074 CET1 capital Concept (Monetary) As Of Credit nwpc:CapitalEquityTier1Cet1Capital
2075 Additional Tier 1 (AT1) capital Abstract nwpc:AdditionalTier1T1CapitalAbstract
2076 Qualifying instruments and related share premium subject to phase out Concept (Monetary) As Of Credit nwpc:QualifyingInstrumentsAndRelatedSharePremiumSubjectToPhaseOut
2077 Instruments of financial sector entities where the institution has a significant investment Concept (Monetary) As Of Debit nwpc:DeductionOfInstrumentsOfFinancialSectorEntitiesSignificantInvestmentToTier1Capital
2078 Qualifying deductions exceeding AT1 capital Concept (Monetary) As Of Credit nwpc:QualifyingDeductionExceedingAdditionalTier1At1Capital
2079 Total tier 1 deductions Concept (Monetary) As Of Credit nwpc:Tier1Deductions
2080 Tier 1 capital Concept (Monetary) As Of Credit nwpc:Tier1Capital
2081 Qualifying Tier 2 capital Abstract nwpc:QualifyingTier2CapitalAbstract
2082 Qualifying instruments and related share premium Concept (Monetary) As Of Credit nwpc:QualifyingInstrumentsAndRelatedSharePremium
2083 Instruments of financial sector entities where the institution has a significant investment Concept (Monetary) As Of Debit nwpc:DeductionOfInstrumentsOfFinancialSectorEntitiesSignificantInvestmentToTier2Capital
2084 Total adjustments to tier 2 capital Concept (Monetary) As Of Credit nwpc:TotalAdjustmentsToTier2Capital
2085 Tier 2 capital Concept (Monetary) As Of Credit nwpc:Tier2Capital
2086 Total regulatory capital Concept (Monetary) As Of Credit nwpc:TotalRegulatoryCapital
2087 Minimum pillar 1 capital ratio Concept (Percent) As Of nwpc:PillarOneCapitalRatioPra
2088 Minimum tier 1 component ratio Concept (Percent) As Of nwpc:TierOneComponentRatioPra
2089 43001 - Disclosure - Memorandum items (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureMemorandumItemsDetails
2090 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2091 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2092 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2093 Bank Member nwpc:NationalWestminsterBankPlcMember
2094 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2095 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2096 Guarantees and assets pledged as collateral security Member nwpc:GuaranteesAndAssetsPledgedAsCollateralSecurityMember
2097 Other contingent liabilities Member ifrs-full:OtherContingentLiabilitiesMember
2098 Memorandum items LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2099 Contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2100 Standby facilities, credit lines and other commitments Concept (Monetary) As Of Credit nwpc:StandbyFacilitiesCreditLinesAndOtherCommitments
2101 Contingent liabilities and commitments Concept (Monetary) As Of Credit nwpc:ContingentLiabilitiesAndCommitments
2102 Fee income on fiduciary activities Concept (Monetary) For Period Credit nwpc:FeeIncomeEarnedFromFiduciaryActivities
2103 43002 - Disclosure - Memorandum items - Financial Services Compensation Scheme (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureMemorandumItemsFinancialServicesCompensationSchemeDetails
2104 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2105 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2106 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2107 The Financial Services Compensation Scheme Member ifrs-full:ContingentLiabilityForGuaranteesMember
2108 Memorandum items LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2109 Interest rate basis Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
2110 Adjustment to interest rate basis Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
2111 Total interest element levied on the industry Concept (Monetary) For Period Credit nwpc:InterestElementLeviedOnIndustry
2112 Share of accrued estimated FSCS levies Concept (Monetary) As Of Credit nwpc:AccruedLiabilitiesEstimatedInterestElementLevies
2113 43003 - Disclosure - Memorandum items - Contractual Obligations (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureMemorandumItemsContractualObligationsDetails
2114 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2115 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2116 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2117 Bank Member nwpc:NationalWestminsterBankPlcMember
2118 Maturity [axis] Axis ifrs-full:MaturityAxis
2119 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2120 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
2121 After 1 year but within 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
2122 After 5 years Member ifrs-full:LaterThanFiveYearsMember
2123 Contractual obligation LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2124 Minimum rentals payable under non-cancellable leases Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2125 Contracts to purchase goods or services Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
2126 Total capital commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
2127 43004 - Disclosure - Memorandum items - Litigation, investigations and reviews (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureMemorandumItemsLitigationInvestigationsAndReviewsDetails
2128 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2129 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2130 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2131 Litigation Member ifrs-full:LegalProceedingsContingentLiabilityMember
2132 UK 2008 rights issue shareholder litigation Member nwpc:LegalProceedingsUk2008RightsIssueShareholderLitigationMember
2133 Residential mortgage-backed securities (RMBS) litigation in the US Member nwpc:LegalProceedingsUsResidentialMortgageBackedSecuritiesLitigationMember
2134 Residential mortgage-backed securities (RMBS) litigation in the US, issued by Nomura Holding America Inc and subsidiaries Member nwpc:LegalProceedingsNomuraHoldingAmericaIncAndSubsidiariesMember
2135 Legal Proceedings Federal Home Loan Banks and Other Member nwpc:LegalProceedingsFederalHomeLoanBanksAndOtherMember
2136 London Interbank Offered Rate (LIBOR) Member nwpc:LegalProceedingLondonInterbankOfferedRateMember
2137 JPY LIBOR and Euroyen TIBOR Member nwpc:JpyLiborAndEuroyenTiborMember
2138 ISDAFIX antitrust litigation Member nwpc:LegalProceedingIsdafixAntitrustLitigationMember
2139 FX antitrust litigation Member nwpc:LegalProceedingFxAntitrustLitigationMember
2140 Interest rate swaps antitrust litigation Member nwpc:LegalProceedingInterestRateSwapsAntitrustLitigationMember
2141 Interest rate hedging products litigation Member nwpc:LegalProceedingInterestRateHedgingProductsLitigationMember
2142 Property Alliance Group claim Member nwpc:LegalProceedingIrhpPropertyAllianceGroupClaimMember
2143 Wall Claim Member nwpc:LegalProceedingIrhpWallClaimMember
2144 London Bridge Holdings Ltd and others Member nwpc:LondonBridgeHoldingsLtdAndOthersMember
2145 SMEs Member nwpc:LegalProceedingTreatmentOfSmallAndMediumSizedEnterprisesMember
2146 Coutts & Co Ltd Member nwpc:LegalProceedingCouttsAndCoLtdMember
2147 Tax dispute Member ifrs-full:TaxContingentLiabilityMember
2148 Alleged money laundering scheme Member nwpc:AllegedMoneyLaunderingSchemeMember
2149 Investigation Authorities [Axis] Axis nwpc:InvestigationAuthoritiesAxis
2150 Investigation Authorities Member nwpc:InvestigationAuthoritiesMember
2151 District of Connecticut Member nwpc:DistrictOfConnecticutMember
2152 CFTC Member nwpc:UnitedStatesCommodityFuturesTradingCommissionMember
2153 DOJ Member nwpc:UsDepartmentOfJusticeMember
2154 Federal reserve Member nwpc:FederalReserveSystemMember
2155 FCA Member nwpc:FinancialConductAuthorityMember
2156 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
2157 Other provisions [member] Member ifrs-full:OtherProvisionsMember
2158 Legal proceedings provision [member] Member ifrs-full:LegalProceedingsProvisionMember
2159 RMBS and other securitised products investigations Member nwpc:LegalProceedingsProvisionResidentialMortgageBackedSecuritiesAndOtherSecuritisedProductsInvestigationMember
2160 Interest rate hedging products (IRHP) redress programme Member nwpc:LegalProceedingsProvisionInterestRateHedgingProductRedressProgrammeMember
2161 Investment advice review Member nwpc:LegalProceedingProvisionInvestmentAdviceReviewMember
2162 Packaged accounts Member nwpc:LegalProceedingProvisionPackagedAccountsMember
2163 Redress Member nwpc:RedressMember
2164 Administrative expenses Member nwpc:AdministrativeProvisionMember
2165 Range [axis] Axis ifrs-full:RangeAxis
2166 Ranges [member] Member ifrs-full:RangesMember
2167 Minimum Member ifrs-full:BottomOfRangeMember
2168 Maximum Member ifrs-full:TopOfRangeMember
2169 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2170 Financial liabilities Member ifrs-full:FinancialLiabilitiesMember
2171 Payment protection insurance Member nwpc:PaymentProtectionInsuranceMember
2172 Memorandum items LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2173 Value per share under loss contingency Concept (Share) For Period nwpc:ValuePerShareUnderLossContingency
2174 Aggregate value of loss contingency Concept (Monetary) For Period Debit nwpc:IfrsLossContingencyDamagesSoughtValue
2175 Number of shareholders to whom final settlement made Concept (Integer) For Period nwpc:NumberOfShareholdersToWhomFinalSettlementMade
2176 Number of total shareholders under litigation Concept (Integer) For Period nwpc:NumberOfTotalShareholdersUnderLitigation
2177 Percentage of claims settlement amount Concept (Percent) For Period nwpc:PercentageOfClaimsSettlementAmount
2178 Amount of liability on claims Concept (Monetary) For Period Credit nwpc:LossContingencySettlementLiability
2179 Percentage of claimants action concluded Concept (Percent) For Period nwpc:PercentageOfClaimantsActionConcluded
2180 Maximum settlement amount Concept (Monetary) For Period Credit nwpc:LitigationSettlementValue
2181 Maximum settlement amount available to claims Concept (Monetary) For Period Credit nwpc:LitigationSettlementAvailableValue
2182 Estimated net exposure Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2183 Number of RMBS Concept (Integer) For Period nwpc:NumberOfResidentialMortgageBackedSecurities
2184 Number of other USD LIBOR-related actions Concept (Integer) As Of nwpc:NumberOfOtherUsdLondonInterbankOfferedRateRelatedActions
2185 Number of failed US banks Concept (Integer) For Period nwpc:NumberOfFailedUsBanksServedClaim
2186 Total settlement amount paid Concept (Monetary) For Period Credit nwpc:LitigationSettlementPaid
2187 Amount reimburse customers Concept (Monetary) For Period Credit nwpc:AmountReimburseCustomers
2188 Maximum RMBS issued primarily from 2005 to 2007 Concept (Monetary) As Of Credit nwpc:MaximumResidentialMortgageBackedSecuritiesIssued
2189 Number of purported class actions Concept (Integer) For Period nwpc:LossContingencyNumberOfPurportedClassActions
2190 Number of complaints filed Concept (Integer) For Period nwpc:IfrsLossContingencyNewClaimsFiledNumber
2191 Value-added-tax Concept (Monetary) For Period Credit nwpc:ValueAddedTaxSpecifiedInOpenTaxMatters
2192 Number of claimants Concept (Integer) For Period nwpc:IfrsLossContingencyNumberOfPlaintiffs
2193 Number of terrorist attacks claims dismissed by court Concept (Integer) For Period nwpc:NumberOfTerroristAttacksClaimsDismissed
2194 Number of terrorist attacks claims denied by company Concept (Integer) For Period nwpc:NumberOfTerroristAttacksClaimsDenied
2195 Provisions made Concept (Monetary) For Period Credit nwpc:AdditionalProvisions
2196 Total aggregate provisions Concept (Monetary) As Of Credit ifrs-full:LegalProceedingsProvision
2197 Penalty payable Concept (Monetary) As Of Credit nwpc:LossContingencyPenaltyPayable
2198 Number of former traders entered guilty Concept (Integer) For Period nwpc:NumberOfFormerTradersEnteredGuilty
2199 Number of securities fraud committed Concept (Integer) For Period nwpc:NumberOfSecuritiesFraudCommitted
2200 Penalty paid Concept (Monetary) For Period Credit nwpc:LossContingencyPenaltyPaidAmount
2201 Penalty as a percentage of VAT Concept (Percent) For Period nwpc:PenaltyToBeLeviedAsPercentageOfValueAddedTax
2202 Number of financial institutions from UK Concept (Integer) For Period nwpc:NumberOfFinancialInstitutions
2203 Provision utilised Concept (Monetary) For Period Debit nwpc:LegalProceedingsProvisionUsed
2204 Estimated costs associated with the complaints review process and the automatic refund of complex fees Concept (Monetary) For Period Debit nwpc:EstimatesCostsAssociatedComplaintsReviewProcessAndAutomaticRefundOfComplexFees
2205 Payment Protection Insurance policy term Concept (xbrli:durationItemType) For Period nwpc:PaymentProtectionInsuranceTerm
2206 Number of individuals investigating in connection with 1MBD Concept (Integer) For Period nwpc:NumberOfInvestigatingIndividuals
2207 NPA Term Concept (xbrli:durationItemType) For Period nwpc:NonProsecutionAgreementTerm
2208 Disgorge Profits Concept (Monetary) For Period Credit nwpc:DisgorgementProfits
2209 43101 - Disclosure - Net cash flow from operating activities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureNetCashFlowFromOperatingActivitiesDetails
2210 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
2211 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2212 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2213 Bank Member nwpc:NationalWestminsterBankPlcMember
2214 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
2215 Net cash flow from operating activities Abstract ifrs-full:ClassesOfCashPaymentsAbstract
2216 Operating profit /(loss) before tax - continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2217 Loss before tax - discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTaxDiscontinuedOperations
2218 Decrease/(increase) in prepayments and accrued income Concept (Monetary) For Period Debit nwpc:AdjustmentsForDecreaseIncreaseInPrepaymentsAndAccruedIncome
2219 Interest on subordinated liabilities Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
2220 (Decrease)/increase in accruals and deferred income Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
2221 Impairment losses/(releases) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
2222 Loans and advances written-off net of recoveries Concept (Monetary) For Period Credit nwpc:AdjustmentsForLoansAndAdvancesWrittenOffNetOfRecoveries
2223 Unwind of discount on impairment losses Concept (Monetary) For Period Credit nwpc:AdjustmentsForUnwindOfDiscountOnImpairmentLosses
2224 (Profit)/loss on sale of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets
2225 Loss/(profit) on sale of subsidiaries and associates Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
2226 (Profit)/loss on sale of securities Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncome
2227 Charge for defined benefit pension schemes Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
2228 Pension scheme curtailments or settlements gain Concept (Monetary) For Period Debit nwpc:AdjustmentsForCurtailmentsOrSettlementLossGainDefinedBenefitPlan
2229 Cash contribution to defined benefit pension schemes Concept (Monetary) For Period Credit nwpc:PaymentsForContributionsToDefinedBenefitPlan
2230 Other provisions charged net of releases Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
2231 Other provisions utilised Concept (Monetary) For Period Credit nwpc:AdjustmentsForOtherProvisionsUtilised
2232 Depreciation and amortisation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
2233 Write down of goodwill and other intangible assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossRecognisedInProfitOrLossGoodwill
2234 Write back/(write down) of investment in subsidiaries Concept (Monetary) For Period Credit nwpc:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentInSubsidiaries
2235 Elimination of foreign exchange differences Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
2236 Other non-cash items Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
2237 Net cash (outflow)/inflow from trading activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
2238 (Increase)/decrease in loans and advances to banks and customers Concept (Monetary) For Period Debit nwpc:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToBanksAndCustomers
2239 Decrease/(increase) in securities Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInFinancialAssets
2240 (Increase)/decrease in other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
2241 Decrease/(increase) in derivative assets Concept (Monetary) For Period Debit nwpc:AdjustmentsForDecreaseIncreaseInDerivativeAssets
2242 Changes in operating assets Concept (Monetary) For Period Debit nwpc:AdjustmentsForDecreaseIncreaseInOperatingAssets
2243 Increase/(decrease) in deposits by banks and customers Concept (Monetary) For Period Debit nwpc:AdjustmentsForIncreaseDecreaseInDepositsFromBanksAndCustomers
2244 Increase/(decrease) in debt securities in issue Concept (Monetary) For Period Debit nwpc:AdjustmentsForIncreaseDecreaseInSecuritiesInIssue
2245 Increase/(decrease) in other liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
2246 (Decrease)/increase in derivative liabilities Concept (Monetary) For Period Debit nwpc:AdjustmentsForIncreaseDecreaseInDerivativeLiabilities
2247 (Decrease)/increase in settlement balances and short positions Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInInsuranceReinsuranceAndInvestmentContractLiabilities
2248 Changes in operating liabilities Concept (Monetary) For Period Debit nwpc:AdjustmentsForIncreaseDecreaseInOperatingLiabilities
2249 Income taxes (paid)/received Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
2250 Net cash flows from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
2251 43201 - Disclosure - Analysis of the net investment in business interests and intangible assets (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfNetInvestmentInBusinessInterestsAndIntangibleAssetsDetails
2252 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
2253 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2254 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2255 Bank Member nwpc:NationalWestminsterBankPlcMember
2256 Acquisitions and disposals LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
2257 Value recognised for business transferred from fellow subsidiary Concept (Monetary) For Period Credit nwpc:ValueRecognisedForBusinessTransferredFromFellowSubsidiary
2258 Additional investments in Group undertakings Concept (Monetary) For Period Credit nwpc:AdditionalInvestmentsInGroupUndertakings
2259 Fair value given for business acquired Concept (Monetary) For Period Credit nwpc:FairValueOfBusinessAcquired
2260 Net outflow of cash in respect of purchases Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
2261 Other assets sold Concept (Monetary) For Period Debit ifrs-full:ProceedsFromOtherLongtermAssetsClassifiedAsInvestingActivities
2262 Disposal of investment in group undertakings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
2263 Non-cash consideration Concept (Monetary) For Period Debit ifrs-full:OtherMaterialNoncashItems
2264 (Loss)/profit on disposals Concept (Monetary) For Period Debit nwpc:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociatesCashFlowInvestingActivities
2265 Net inflow/(outflow) of cash in respect of disposals Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
2266 Dividends received from associates Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities
2267 Net cash expenditure on intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
2268 Net inflow/(outflow) Concept (Monetary) For Period Credit nwpc:CashFlowsFromUsedInInvestmentDivestmentOfBusinessInterestsAndIntangibleAssets
2269 43301 - Disclosure - Interest received and paid (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureInterestReceivedAndPaidDetails
2270 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
2271 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2272 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2273 Bank Member nwpc:NationalWestminsterBankPlcMember
2274 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
2275 Interest received and paid Abstract nwpc:InterestReceivedAndPaidAbstract
2276 Interest received Concept (Monetary) For Period Debit nwpc:InterestReceived
2277 Interest paid Concept (Monetary) For Period Credit nwpc:InterestPaidDuringPeriod
2278 Interest received (paid) net Concept (Monetary) For Period Debit nwpc:InterestReceivedPaidNet
2279 43401 - Disclosure - Analysis of changes in financing during the year - Share capital and share premium (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfChangesInFinancingDuringYearShareCapitalAndSharePremiumDetails
2280 Statement of changes in equity [table] Table

*

*

 ifrs-full:StatementOfChangesInEquityTable
2281 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
2282 Equity [member] Member ifrs-full:EquityMember
2283 Share capital and share premium Member nwpc:ShareCapitalAndSharePremiumMember
2284 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2285 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2286 Bank Member nwpc:NationalWestminsterBankPlcMember
2287 Changes in equity LineItems ifrs-full:StatementOfChangesInEquityLineItems
2288 Balance at beginning of the year Concept (Monetary) As Of Credit ifrs-full:Equity
2289 Net cash flows from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
2290 Balance at end of the year Concept (Monetary) As Of Credit ifrs-full:Equity
2291 43402 - Disclosure - Analysis of changes in financing during the year - subordinated liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfChangesInFinancingDuringYearSubordinatedLiabilitiesDetails
2292 Disclosure of financial liabilities [table] Table

*

*

 ifrs-full:DisclosureOfFinancialLiabilitiesTable
2293 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2294 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2295 Bank Member nwpc:NationalWestminsterBankPlcMember
2296 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
2297 Financial liabilities Member ifrs-full:FinancialLiabilitiesMember
2298 Subordinated Liabilities Member nwpc:SubordinatedLiabilitiesMember
2299 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
2300 Subordinated liabilities Abstract ifrs-full:SubordinatedLiabilitiesAbstract
2301 Subordinated liabilities, beginning of period Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
2302 Issue of subordinated liabilities Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfSubordinatedLiabilities
2303 Redemption of subordinated liabilities Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfSubordinatedLiabilities
2304 Redemption of preference shares Concept (Monetary) For Period Credit nwpc:RedemptionOfPreferenceShares
2305 Net cash flows from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
2306 Currency translation and other adjustments Concept (Monetary) For Period Debit nwpc:OtherInflowsOutflowsOfCashIncludingForeignExchangeClassifiedAsFinancingActivities
2307 Subordinated liabilities, end of period Concept (Monetary) As Of Credit ifrs-full:SubordinatedLiabilities
2308 43501 - Disclosure - Analysis of cash and cash equivalents (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfCashAndCashEquivalentsDetails
2309 Disclosure of information about consolidated structured entities [table] Table

*

*

 ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesTable
2310 Consolidated Entities [Axis] Axis nwpc:IfrsConsolidatedEntitiesAxis
2311 Consolidated Entities [Domain] Member nwpc:IfrsConsolidatedEntitiesDomain
2312 Bank Member nwpc:NationalWestminsterBankPlcMember
2313 Disclosure of information about consolidated structured entities [line items] LineItems ifrs-full:DisclosureOfInformationAboutConsolidatedStructuredEntitiesLineItems
2314 Cash and cash equivalents Abstract ifrs-full:CashEquivalentsAbstract
2315 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
2316 Cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashEquivalents
2317 Cash and cash equivalents at beginning of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2318 Net cash inflow/(outflow) Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
2319 Cash and cash equivalents at end of the year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2320 Cash and balances at central banks Concept (Monetary) As Of Debit ifrs-full:CashAndBankBalancesAtCentralBanks
2321 Treasury bills and debt securities Concept (Monetary) As Of Debit ifrs-full:ShorttermInvestmentsClassifiedAsCashEquivalents
2322 Loans and advances to banks Concept (Monetary) As Of Debit nwpc:LoansAndAdvancesToBanksCashAndCashEquivalents
2323 Total cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2324 43502 - Disclosure - Analysis of cash and cash equivalents - collateral and reserve deposits (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureAnalysisOfCashAndCashEquivalentsCollateralAndReserveDepositsDetails
2325 Implied Table Table

*

*

 implied:Table
2326 Analysis of cash and cash equivalents Abstract ifrs-full:CashAndCashEquivalentsAbstract
2327 Cash collateral posted with bank counterparties Concept (Monetary) As Of Debit nwpc:CashCollateralPostedRelatedToDerivativeLiabilities
2328 Mandatory reserve deposits at central banks Concept (Monetary) As Of Debit ifrs-full:MandatoryReserveDepositsAtCentralBanks
2329 43601 - Disclosure - Segmental analysis (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisDetails
2330 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2331 Segments [axis] Axis ifrs-full:SegmentsAxis
2332 Segments [member] Member ifrs-full:SegmentsMember
2333 Personal and Business Banking (PBB) Member nwpc:PersonalAndBusinessBankingPbbMember
2334 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
2335 Commercial and Private Banking (CPB) Member nwpc:CommercialAndPrivateBankingCpbMember
2336 Range [axis] Axis ifrs-full:RangeAxis
2337 Ranges [member] Member ifrs-full:RangesMember
2338 Maximum Member ifrs-full:TopOfRangeMember
2339 Segmental analysis LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2340 Turnover threshold Concept (Monetary) For Period Credit nwpc:SmallBusinessRevenueThreshold
2341 Number of reportable segments Concept (Integer) For Period us-gaap:NumberOfReportableSegments
2342 43602 - Disclosure - Segmental analysis - Segment activity (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisSegmentActivityDetails
2343 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2344 Segments [axis] Axis ifrs-full:SegmentsAxis
2345 Segments [member] Member ifrs-full:SegmentsMember
2346 Personal and Business Banking (PBB) Member nwpc:PersonalAndBusinessBankingPbbMember
2347 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
2348 Commercial and Private Banking (CPB) Member nwpc:CommercialAndPrivateBankingCpbMember
2349 Commercial Banking Member nwpc:CommercialBankingMember
2350 Private Banking Member nwpc:PrivateBankingMember
2351 Central Items and other Member nwpc:CentralItemsAndOtherMember
2352 Segmental analysis LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2353 Net interest income Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
2354 Non-interest income Concept (Monetary) For Period Credit nwpc:NoninterestIncomeExpense
2355 Total income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
2356 Operating expenses, excluding depreciation and amortisation Concept (Monetary) For Period Debit nwpc:OperatingExpenseExcludingDepreciationAndAmortisation
2357 Depreciation and amortisation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
2358 Impairment (losses)/releases Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
2359 Operating profit/(loss) before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2360 43603 - Disclosure - Segmental analysis - Total revenue (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisTotalRevenueDetails
2361 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2362 Segments [axis] Axis ifrs-full:SegmentsAxis
2363 Segments [member] Member ifrs-full:SegmentsMember
2364 Personal and Business Banking (PBB) Member nwpc:PersonalAndBusinessBankingPbbMember
2365 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
2366 Commercial and Private Banking (CPB) Member nwpc:CommercialAndPrivateBankingCpbMember
2367 Commercial Banking Member nwpc:CommercialBankingMember
2368 Private Banking Member nwpc:PrivateBankingMember
2369 Central Items and other Member nwpc:CentralItemsAndOtherMember
2370 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2371 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2372 Operating segment Member ifrs-full:OperatingSegmentsMember
2373 Inter segment Member ifrs-full:MaterialReconcilingItemsMember
2374 Segmental analysis LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2375 Total revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2376 43604 - Disclosure - Segmental analysis - Total income (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisTotalIncomeDetails
2377 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2378 Segments [axis] Axis ifrs-full:SegmentsAxis
2379 Segments [member] Member ifrs-full:SegmentsMember
2380 Personal and Business Banking (PBB) Member nwpc:PersonalAndBusinessBankingPbbMember
2381 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
2382 Commercial and Private Banking (CPB) Member nwpc:CommercialAndPrivateBankingCpbMember
2383 Commercial Banking Member nwpc:CommercialBankingMember
2384 Private Banking Member nwpc:PrivateBankingMember
2385 Central Items and other Member nwpc:CentralItemsAndOtherMember
2386 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
2387 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
2388 Operating segment Member ifrs-full:OperatingSegmentsMember
2389 Inter segment Member ifrs-full:MaterialReconcilingItemsMember
2390 Segmental analysis LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2391 Total income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
2392 43605 - Disclosure - Segmental analysis - Assets and Liabilities (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisAssetsAndLiabilitiesDetails
2393 Disclosure of operating segments [table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
2394 Segments [axis] Axis ifrs-full:SegmentsAxis
2395 Segments [member] Member ifrs-full:SegmentsMember
2396 Personal and Business Banking (PBB) Member nwpc:PersonalAndBusinessBankingPbbMember
2397 UK Personal & Business Banking Member nwpc:UkPersonalAndBusinessBankingMember
2398 Commercial and Private Banking (CPB) Member nwpc:CommercialAndPrivateBankingCpbMember
2399 Commercial Banking Member nwpc:CommercialBankingMember
2400 Private Banking Member nwpc:PrivateBankingMember
2401 Central Items and other Member nwpc:CentralItemsAndOtherMember
2402 Segmental analysis LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
2403 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
2404 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2405 Cost to acquire fixed assets and intangible assets Concept (Monetary) For Period Debit nwpc:CostToAcquireFixedAssetsAndIntangibleAssets
2406 43606 - Disclosure - Segmental analysis - Geographical (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureSegmentalAnalysisGeographicalDetails
2407 Disclosure of geographical areas [table] Table

*

*

 ifrs-full:DisclosureOfGeographicalAreasTable
2408 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2409 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2410 UK Member country:GB
2411 USA Member country:US
2412 Europe Member us-gaap:EuropeMember
2413 RoW Member nwpc:RestOfWorldExcludingUnitedKingdomUnitedStatesAndEuropeMember
2414 Geographical segments LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
2415 Total revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2416 Net interest income Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
2417 Net fees and commissions Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncomeExpense
2418 Income from trading activities Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpense
2419 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
2420 Total income Concept (Monetary) For Period Credit ifrs-full:RevenueAndOperatingIncome
2421 Operating profit/(loss) before tax from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2422 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
2423 Of which total assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
2424 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2425 Of which total liabilities held for sale Concept (Monetary) As Of Credit ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
2426 Net assets attributable to equity owners and non-controlling interests Concept (Monetary) As Of Credit ifrs-full:Equity
2427 Contingent liabilities and commitments Concept (Monetary) As Of Credit nwpc:ContingentLiabilitiesAndCommitments
2428 Cost to acquire property, plant and equipment and intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
2429 43701 - Disclosure - Directors and key management remuneration - Directors' remuneration (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDirectorsAndKeyManagementRemunerationDirectorsRemunerationDetails
2430 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2431 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2432 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2433 Non-executive directors Member nwpc:NonExecutiveDirectorsMember
2434 Chairman and executive directors Member nwpc:ChairmanAndExecutiveDirectorsMember
2435 Transactions between related parties LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2436 Director emoluments before amounts receivable under long-term incentive plans and share option plans Concept (Monetary) For Period Debit nwpc:DirectorEmoluments
2437 Amounts receivable under long-term incentive plans and share option plans Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToRelatedParties
2438 Total Directors' remuneration Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
2439 Accrued benefits to directors Concept (Monetary) For Period Debit ifrs-full:BenefitsPaidOrPayable
2440 43702 - Disclosure - Directors and key management remuneration - Compensation of key management (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureDirectorsAndKeyManagementRemunerationCompensationOfKeyManagementDetails
2441 Implied Table Table

*

*

 implied:Table
2442 Directors' and key management remuneration Abstract nwpc:DirectorsAndKeyManagementRemunerationAbstract
2443 Short-term benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2444 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
2445 Share-based payments Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
2446 Total compensation of key management Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
2447 43801 - Disclosure - Transactions with directors and key management (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureTransactionsWithDirectorsAndKeyManagementDetails
2448 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2449 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2450 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2451 Key management personnel Member ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
2452 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2453 Loans to directors Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
2454 Number of directors with outstanding loans Concept (Integer) As Of nwpc:NumberOfDirectorsWithOutstandingLoanBalance
2455 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
2456 Deposits from customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
2457 43901 - Disclosure - Related parties (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureRelatedPartiesDetails
2458 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2459 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2460 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2461 Subsidiaries Member ifrs-full:SubsidiariesMember
2462 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
2463 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
2464 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
2465 Transactions between related parties LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2466 Conversion price per share Concept (Share) As Of nwpc:ConversionPricePerShare
2467 Cash ratio deposits Concept (Percent) For Period nwpc:CashRatioDeposits
2468 Threshold eligible liabilities Concept (Monetary) As Of Credit nwpc:ThresholdEligibleLiabilitiesToCalculateNoninterestBearingDeposit
2469 Interest receivable Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
2470 Interest payable Concept (Monetary) For Period Debit ifrs-full:InterestExpense
2471 Fees and commissions receivable Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
2472 Fees and commissions payable Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
2473 Net expenses Concept (Monetary) For Period Debit nwpc:ExpensesNet
2474 Other administrative expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
2475 Profit/(loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2476 44001 - Disclosure - Ultimate holding company (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureUltimateHoldingCompanyDetails
2477 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2478 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
2479 Counterparties [member] Member ifrs-full:CounterpartiesMember
2480 Uk government Member nwpc:UkGovernmentMember
2481 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2482 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2483 The Royal Bank of Scotland plc Member ifrs-full:ParentMember
2484 Transactions between related parties LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2485 Percentage of share capital owned Concept (Percent) For Period nwpc:PercentageOfShareCapitalOwnedByRelatedParties
2486 44201 - Disclosure - Related undertakings (Details) Network

*

*

 http://www.nwpc.com/role/DisclosureRelatedUndertakingsDetails
2487 Schedule of related undertakings [table] Table

*

*

 nwpc:ScheduleOfRelatedUndertakingsTable
2488 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2489 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2490 RBS Covered Bonds LLP Member nwpc:RbsCoveredBondsLlpMember
2491 Jaguar Cars Finance Ltd Member nwpc:JaguarCarsFinanceLtdMember
2492 JCB Finance Ltd Member nwpc:JcbFinanceLtdMember
2493 JCB Finance (Leasing) Ltd Member nwpc:JcbFinanceLeasingLtdMember
2494 Landpower Leasing Ltd Member nwpc:LandpowerLeasingLtdMember
2495 Optimus KB Member nwpc:OptimusKbMember
2496 Stora Kvarnen KB Member nwpc:StoraKvarnenKbMember
2497 Frvaltningsbolaget Klverbacken Skola KB Member nwpc:FrvaltningsbolagetKlverbackenSkolaKbMember
2498 Equator Investments (Cayman) Ltd Member nwpc:EquatorInvestmentsCaymanLtdMember
2499 West Register Prime Holding GmbH i. L. Member nwpc:WestRegisterPrimeHoldingGmbhI.L.Member
2500 Coutts & Co (Manx) Ltd Member nwpc:CouttsCoManxLtdMember
2501 The Royal Bank of Scotland Finance (Ireland) Member nwpc:RoyalBankOfScotlandFinanceIrelandMember
2502 CNW Group Ltd Member nwpc:CnwGroupLtdMember
2503 Greenwich NatWest Ltd Member nwpc:GreenwichNatwestLtdMember
2504 NatWest (HMHP) Ltd Member nwpc:NatwestHmhpLtdMember
2505 NatWest Finance Ltd Member nwpc:NatwestFinanceLtdMember
2506 NatWest Nominees Ltd Member nwpc:NatwestNomineesLtdMember
2507 Dixon Motors Developments Ltd Member nwpc:DixonMotorsDevelopmentsLtdMember
2508 Farming and Agricultural Finance Ltd Member nwpc:FarmingAndAgriculturalFinanceLtdMember
2509 Lombard Corporate Finance (3) Ltd Member nwpc:LombardCorporateFinance3LtdMember
2510 Lombard Venture Finance Ltd Member nwpc:LombardVentureFinanceLtdMember
2511 Property Ventures (B&M) Ltd Member nwpc:PropertyVenturesBMLtdMember
2512 WR (NI) Property Investments Ltd Member nwpc:WrNiPropertyInvestmentsLtdMember
2513 WR (NI) Property Realisations Ltd Member nwpc:WrNiPropertyRealisationsLtdMember
2514 West Register (Northern Ireland) Property Ltd Member nwpc:WestRegisterNorthernIrelandPropertyLtdMember
2515 RoyScot Ltd Member nwpc:RoyscotLtdMember
2516 Northants Developments Ltd Member nwpc:NorthantsDevelopmentsLtdMember
2517 Thrapston Triangle Ltd Member nwpc:ThrapstonTriangleLtdMember
2518 Emperor Holdings Ltd Member nwpc:EmperorHoldingsLtdMember
2519 Latam Directors Ltd Member nwpc:LatamDirectorsLtdMember
2520 Nordisk Renting A/S Member nwpc:NordiskRentingSMember
2521 Nordisk Renting Facilities Management AB Member nwpc:NordiskRentingFacilitiesManagementAbMember
2522 Nordisk Renting HB Member nwpc:NordiskRentingHbMember
2523 NatWest Aerospace Trust Company Ltd Member nwpc:NatwestAerospaceTrustCompanyLtdMember
2524 NatWest FIS Nominees Ltd Member nwpc:NatwestFisNomineesLtdMember
2525 NatWest PEP Nominees Ltd Member nwpc:NatwestPepNomineesLtdMember
2526 NatWest Security Trustee Company Ltd Member nwpc:NatwestSecurityTrusteeCompanyLtdMember
2527 Lombard Bank Member nwpc:LombardBankMember
2528 Dunfly Trustee Ltd Member nwpc:DunflyTrusteeLtdMember
2529 National Westminster Ltd Member nwpc:NationalWestminsterLtdMember
2530 RBS Secretarial Services Ltd Member nwpc:RbsSecretarialServicesLtdMember
2531 Syndicate Nominees Ltd Member nwpc:SyndicateNomineesLtdMember
2532 RBS Pension Trustee Ltd Member nwpc:RbsPensionTrusteeLtdMember
2533 HPUT A Ltd Member nwpc:HputLtdMember
2534 HPUT B Ltd Member nwpc:HputBLtdMember
2535 Nextlinks Ltd Member nwpc:NextlinksLtdMember
2536 Dixon Vehicle Sales Ltd Member nwpc:DixonVehicleSalesLtdMember
2537 NatWest Invoice Finance Ltd Member nwpc:NatwestInvoiceFinanceLtdMember
2538 Strand Nominees Ltd Member nwpc:StrandNomineesLtdMember
2539 RBSG Collective Investments Nominees Ltd Member nwpc:RbsgCollectiveInvestmentsNomineesLtdMember
2540 RBS Investment Executive Ltd Member nwpc:RbsInvestmentExecutiveLtdMember
2541 JCB Finance Pension Ltd Member nwpc:JcbFinancePensionLtdMember
2542 RoyScot Leasing Ltd Member nwpc:RoyscotLeasingLtdMember
2543 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
2544 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
2545 GWNW City Developments Ltd Member nwpc:GwnwCityDevelopmentsLtdMember
2546 Cala Campus Ltd Member nwpc:CalaCampusLtdMember
2547 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
2548 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
2549 Pharos Estates Ltd Member nwpc:PharosEstatesLtdMember
2550 Winiowy Management sp. z o.o. Member nwpc:WiniowyManagementSp.ZO.o.Member
2551 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2552 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2553 UK Member ifrs-full:CountryOfDomicileMember
2554 Foreign Member ifrs-full:ForeignCountriesMember
2555 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
2556 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
2557 Discontinued Operations Member ifrs-full:DiscontinuedOperationsMember
2558 Related undertakings LineItems nwpc:DisclosureOfRelatedUndertakingsLineItems
2559 Ownership interest in subsidiary - Fully consoldiated Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2560 Ownership interest in joint venture Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
2561 Ownership interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
2562 Ownership interest in subsidiary - Not consoldiated Concept (Percent) For Period nwpc:ProportionOfOwnershipInterestInSubsidiaryNotConsolidated

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