Structured entities - Own asset securitisations (Details) - GBP (£) £ in Millions	Dec. 31, 2021	Dec. 31, 2020
Consolidated structured entities
Loans and advances to customers	£ 358,990	£ 360,544
Consolidated structured entities \| Other credit risk transfer securitisations
Consolidated structured entities
Loans and advances to customers	7,137	10,027
ECL in relation to non-defaulted assets	28	183
Consolidated structured entities \| Covered Bond Programme
Consolidated structured entities
Debt securities in issue	0	318
Loans and advances to customers	8,965	10,758
Other borrowings	3,512	4,105
Consolidated structured entities \| Lending of own issued securities
Consolidated structured entities
Debt securities in issue	1,564	2,029
Consolidated structured entities \| Lending of own issued securities \| Secured
Consolidated structured entities
Debt securities in issue	1,494	1,893
Held by Third party \| Other credit risk transfer securitisations
Consolidated structured entities
Debt securities in issue	£ 867	£ 772

The amount of instruments issued by the entity that represent indebtedness.

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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.

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No definition available.

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- Definition

The amount of loans and advances the entity has made to customers.

+ References

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- Definition

The amount of borrowings that the entity does not separately disclose in the same statement or note. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of expected credit risk in relation to non-defaulted assets.

+ References

No definition available.

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