Consolidated statement of comprehensive income (Parenthetical) £ in Millions	Apr. 17, 2018 GBP (£)
Nat West Bank
Funding commitment to retirement benefit schemes	£ 2,000

Represents other comprehensive income before tax gains losses in funding commitment to retirement benefit schemes.

No definition available.

Name:	rbs_OtherComprehensiveIncomeBeforeTaxGainsLossesInFundingCommitmentToRetirementBenefitSchemes
Namespace Prefix:	rbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration