Structured entities - Unconsolidated structured entities (Details) - GBP (£) £ in Millions	Dec. 31, 2021	Dec. 31, 2020
Unconsolidated structured entities
Unconsolidated structured entities
Liquidity facilities/loan commitments	£ 1,538	£ 1,686
Maximum exposure	8,320	8,127
Unconsolidated structured entities \| Trading assets and derivatives
Unconsolidated structured entities
Assets recognised related to structured entities	705	482
Unconsolidated structured entities \| Trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	607	365
Unconsolidated structured entities \| Derivative assets
Unconsolidated structured entities
Assets recognised related to structured entities	269	457
Unconsolidated structured entities \| Derivative liabilities
Unconsolidated structured entities
Liabilities recognised related to structured entities	(171)	(340)
Unconsolidated structured entities \| Non trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	6,077	5,959
Unconsolidated structured entities \| Loans to customers
Unconsolidated structured entities
Assets recognised related to structured entities	2,053	1,897
Unconsolidated structured entities \| Financial assets (Other)
Unconsolidated structured entities
Assets recognised related to structured entities	4,024	4,062
Asset backed securitisation vehicles
Unconsolidated structured entities
Liquidity facilities/loan commitments	1,403	1,482
Maximum exposure	7,311	7,215
Asset backed securitisation vehicles \| Trading assets and derivatives
Unconsolidated structured entities
Assets recognised related to structured entities	571	441
Asset backed securitisation vehicles \| Trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	490	319
Asset backed securitisation vehicles \| Derivative assets
Unconsolidated structured entities
Assets recognised related to structured entities	251	441
Asset backed securitisation vehicles \| Derivative liabilities
Unconsolidated structured entities
Liabilities recognised related to structured entities	(170)	(319)
Asset backed securitisation vehicles \| Non trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	5,337	5,292
Asset backed securitisation vehicles \| Loans to customers
Unconsolidated structured entities
Assets recognised related to structured entities	1,692	1,400
Asset backed securitisation vehicles \| Financial assets (Other)
Unconsolidated structured entities
Assets recognised related to structured entities	3,645	3,892
Investment funds and other
Unconsolidated structured entities
Liquidity facilities/loan commitments	135	204
Maximum exposure	1,009	912
Investment funds and other \| Trading assets and derivatives
Unconsolidated structured entities
Assets recognised related to structured entities	134	41
Investment funds and other \| Trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	117	46
Investment funds and other \| Derivative assets
Unconsolidated structured entities
Assets recognised related to structured entities	18	16
Investment funds and other \| Derivative liabilities
Unconsolidated structured entities
Liabilities recognised related to structured entities	(1)	(21)
Investment funds and other \| Non trading assets
Unconsolidated structured entities
Assets recognised related to structured entities	740	667
Investment funds and other \| Loans to customers
Unconsolidated structured entities
Assets recognised related to structured entities	361	497
Investment funds and other \| Financial assets (Other)
Unconsolidated structured entities
Assets recognised related to structured entities	£ 379	£ 170

The amount of assets recognised in the entity's financial statements relating to its interests in structured entities. [Refer: Assets; Unconsolidated structured entities [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph 29
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_29_a&doctype=Standard
-URIDate 2021-03-24

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The amount of liabilities recognised in the entity's financial statements relating to its interests in structured entities. [Refer: Liabilities; Unconsolidated structured entities [member]]

+ References

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- Definition

The amount that best represents the entity's maximum exposure to loss from its interests in structured entities. [Refer: Unconsolidated structured entities [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph 29
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_29_c&doctype=Standard
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- Definition

The amount of liquidity facilities recognised in the entity's financial statements relating to its interests in structured entities.

+ References

No definition available.

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