Goodwill and intangible assets - Goodwill allocated to business operations according to business segments (Details) - GBP (£) £ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	£ 277	£ 258
Consumer, Cards and Payments
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill	£ 277	£ 258

The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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