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

The increase (decrease) in liabilities arising from financing activities resulting from changes in fair values. [Refer: Liabilities arising from financing activities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 44B
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44B_d&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 44B
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44B_c&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 44B
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44B_a&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 44D
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_44D&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_LiabilitiesArisingFromFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Decrease in financing liabilities through interest paid on minimum requirement for own funds and eligible liabilities

No definition available.

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

Decrease in financing liabilities through maturity and redemption of minimum requirement for own funds and eligible liabilities

No definition available.

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

Decrease in financing liabilities through payment of interest on subordinated liabilities

No definition available.

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

The decrease in financing liabilities resulting from the redemption of subordinated liabilities

No definition available.

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

The increase (decrease) in (gains) losses on redemption of debt in liabilities arising from financing activities resulting from financing cash flows.

No definition available.

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

Increase (decrease) through interest, liabilities arising from financing activities

No definition available.

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

The increase (decrease) in liabilities arising from financing activities resulting from other adjustments.

No definition available.

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

The increase (decrease) in liabilities arising from financing activities resulting from preference shares reclassified to subordinated liabilities.

No definition available.

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

Increase in financing liabilities through issue of minimum requirement for own funds and eligible liabilities

No definition available.

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

Increase in financing liabilities issue of subordinated liabilities

No definition available.