Structured entities - Conduits (Details) $ in Billions	12 Months Ended
Dec. 31, 2021 USD ($) conduit	Dec. 31, 2020 USD ($)
Disclosure of information about consolidated structured entities [line items]
Number of conduit types \| conduit	2
Securities investment conduits \| Solitaire
Disclosure of information about consolidated structured entities [line items]
Asset backed securities	$ 1.6	$ 1.9
Commercial paper held by HSBC	1.8	2.1
Multi-seller conduit
Disclosure of information about consolidated structured entities [line items]
Maximum exposure	$ 6.7	$ 9.6

Number Of Conduits

No definition available.

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- Definition

The amount of debt instruments held that are backed by underlying assets. [Refer: Debt instruments held]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The amount of debt instruments held by the entity that were issued by a corporate entity. [Refer: Debt instruments held]

+ References

+ Details

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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.

+ Details

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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
-URIDate 2021-03-24

+ Details

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- Details

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Namespace Prefix:
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Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type: