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Estimated Financial Effect Of Contingent Liabilities, Punitive Damages

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Estimated Fund Transfers Less Withdrawals From Securities Under Litigation

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Expense From Fines And Penalties

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Loss Contingency, Damages Sought

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Loss Contingency, Damages Sought1

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Loss Contingency, Number Of Groups Of Plaintiffs

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Loss Contingency, Number Of Hearings

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Loss Contingency, Number Of Pending Actions

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Loss Contingency, Number Of US Dollar Libor-Related Actions Seeking Damages

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Loss Contingency, Pending Claims, Early Stage, Number

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Number Of Banking Relationships Under Investigation

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Number Of Current And Former Employees

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Number Of Employees Involved In Litigation

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Number Of Mortgage Securitisation Trusts

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Number Of Other Banks Party To Investigation

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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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The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]

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Legal proceedings and regulatory matters (Details) £ in Millions, $ in Millions, $ in Millions	1 Months Ended		6 Months Ended
	Feb. 28, 2025 GBP (£)	Feb. 29, 2024 GBP (£)	Jun. 30, 2025 USD ($) bankingRelationship action trust bank case employee plaintiff	Jun. 30, 2025 CAD ($) bankingRelationship action trust bank	Dec. 31, 2024 USD ($)	Mar. 31, 2024 employee	Dec. 31, 2013 USD ($)	Nov. 30, 2008 USD ($)
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			$ 115,007		$ 110,019
Number of mortgage securitisation trusts (more than) \| trust			280	280
Benchmark rate litigation
Disclosure of contingent liabilities [line items]
Number of groups of plaintiffs \| plaintiff			5
Actions seeking damages \| action			2	2
Gilts trading investigation
Disclosure of contingent liabilities [line items]
Number of other banks \| bank			4	4
Fines and penalties \| £	£ 23.4
Precious metals fix-related investigations and litigation
Disclosure of contingent liabilities [line items]
Employees involved in litigation \| employee			7
Damages sought			$ 1,000
US mortgage securitisation litigation
Disclosure of contingent liabilities [line items]
Number of pending actions \| action			1	1
Madoff Securities
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			$ 543
Fairfield
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			382
Herald Fund SPC
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities							$ 5,600
Herald Fund SPC \| Cash and securities
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities							$ 2,500
Alpha Prime Fund Limited
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			1,160
Senator Fund SPC \| Cash and securities
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			625
Senator Fund SPC \| Cash and cash equivalents
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities			$ 188
Ontario and Quebec superior courts
Disclosure of contingent liabilities [line items]
Estimated financial effect of contingent liabilities				$ 1,000
Number of hearings \| action			2
Punitive damages				$ 250
Madoff Securities
Disclosure of contingent liabilities [line items]
Aggregate value of funds with assets invested in securities under litigation								$ 8,400
Estimated fund transfers, less withdrawals from securities under litigation								$ 4,000
HSBC Holdings \| New York \| Anti-money laundering and sanctions-related matters
Disclosure of contingent liabilities [line items]
Number of hearings \| action			7
Number of claims dismissed \| case			3
Number of remaining actions at a very early stage \| action			4
HSBC Holdings and HSBC Bank plc \| Forex litigation
Disclosure of contingent liabilities [line items]
Damages sought \| £		£ 3,000.0
Hongkong and Shanghai Banking Corporation \| Korean short selling investigation
Disclosure of contingent liabilities [line items]
Number of employees \| employee						3
HSBC Private Bank (Suisse) SA ('PBRS')
Disclosure of contingent liabilities [line items]
Number of banking relationships \| bankingRelationship			2	2