Contingent liabilities and commitments (Details) - GBP (£) £ in Millions	Jun. 30, 2018	Dec. 31, 2017
Contingent liabilities and commitments
Standby facilities, credit lines and other commitments	£ 122,526	£ 124,941
Contingent liabilities and commitments	132,066	136,050
Guarantees and assets pledged as collateral security
Contingent liabilities and commitments
Estimated net exposure	6,262	7,718
Other contingent liabilities
Contingent liabilities and commitments
Estimated net exposure	£ 3,278	£ 3,391

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

No definition available.

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- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2017-01-01
-Paragraph 86
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- Definition

The amount of contingent liabilities and the amount of future expenditures that the entity is committed to make.

+ References

No definition available.

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- Definition

The amount of standby facilities, credit lines and other commitments.

+ References

No definition available.

+ Details

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