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HSBC Holdings' subsidiaries, joint ventures and associates - Subsidiaries (Details)
12 Months Ended
Jun. 18, 2024
Dec. 31, 2024
AI Nominees (UK) One Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
AI Nominees (UK) Two Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance December (F) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance December (H) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance December (P) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance December (R) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance June (A) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance June (D) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance March (B) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance March (D) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance March (F) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance September (F) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Assetfinance September (G) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
B&Q Financial Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Banco HSBC S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Banco Nominees (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Banco Nominees 2 (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Banco Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Beijing Miyun HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Canada Crescent Nominees (UK) Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Canada Square Nominees (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Capco/Cove, Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Card-Flo 3, Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
CCF & Partners Asset Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Charterhouse Administrators ( D.T.) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Charterhouse Management Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Charterhouse Pensions Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Chongqing Dazu HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Chongqing Fengdu HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Chongqing Rongchang HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Dalian Pulandian HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Dempar 1    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Desarrollo Turistico, S.A. de C.V. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Electronic Data Process México, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Eton Corporate Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Flandres Contentieux S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Foncière Elysées    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Fujian Yongan HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Fulcher Enterprises Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Fundacion HSBC, A.C.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Giller Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Griffin International Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Grupo Financiero HSBC, S. A. de C. V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
Fujian Yongan HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Fulcher Enterprises Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng (Nominee) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Bank (China) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Bank (Trustee) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Bank Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
Hang Seng Bullion Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Credit Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Data Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Data Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Financial Information Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Indexes Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Insurance Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Investment Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Investment Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Japan Topix 100 Index ETF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   66.43%
Hang Seng Qianhai Fund Management Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   70.00%
Hang Seng Real Estate Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Securities Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hang Seng Security Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Haseba Investment Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HBPH Corporation (In Dissolution)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HFC Bank Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
High Time Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HLF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Honey Blue Enterprises Limited (亨京企業有限公司)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Honey Green Enterprises Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Honey Grey Enterprises Limited (亨穗企業有限公司)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Honey Silver Enterprises Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Household International Europe Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Household Pooling Corporation    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (BGF) Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (General Partner) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (Guernsey) GP PCC Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (Guernsey) GP PCC Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (Malaysia) Trustee Berhad    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC (Singapore) Nominees Pte Ltd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Actions Europe    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   50.66%
HSBC Agency (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Alternative Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Amanah Malaysia Berhad    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Americas Corporation (Delaware)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asia Holdings B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asia Holdings Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asia Pacific Holdings (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asset Finance (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asset Finance M.O.G. Holdings (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asset Management (Fund Services UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Asset Management (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Asset Management (Japan) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Assurances Vie (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Australia Holdings Pty Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC BANK (CHILE)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (China) Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (General Partner) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (Mauritius) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (Singapore) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (Taiwan) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (Uruguay) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank (Vietnam) Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank A.S.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Australia Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Bermuda Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Egypt S.A.E    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   94.54%
HSBC Bank Malaysia Berhad    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Malta p.l.c.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   70.03%
HSBC Bank Middle East Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Middle East Limited Representative Office Morocco SARL (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank Pension Trust (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank plc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Bank USA, National Association    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Branch Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Brasil Holding S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Forex (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Futures (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Futures (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Securities (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Securities (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Broking Services (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Capital (USA), Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Card Services Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Casa de Bolsa, S.A. de C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Cayman Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Cayman Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Client Holdings Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Client Nominee (Jersey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Climate Tech Venture Capital Fund SCSp    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   87.15%
HSBC Continental Europe    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Corporate Advisory (Malaysia) Sdn Bhd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Corporate Finance (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Corporate Secretary (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Corporate Trustee Company (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Custody Nominees (Australia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Custody Services (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Daisy Investments (Mauritius) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Electronic Data Processing (Guangdong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Electronic Data Processing (Malaysia) Sdn Bhd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Electronic Data Processing (Philippines), Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Electronic Data Processing India Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Electronic Data Processing Lanka (Private) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Electronic Data Service Delivery (Egypt) S.A.E    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Equipment Finance (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Equity (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC EURO Protect 80+    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   78.06%
HSBC Europe B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC European Senior Direct Lending Fund 2023 RAIF SICAV-S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   43.00%
HSBC Executor & Trustee Company (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Factoring (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Finance (Netherlands)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Finance Corporation    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Finance Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Finance Transformation (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Financial Advisors Singapore Pte. Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Financial Services (Lebanon) S.A.L    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.83%
HSBC Financial Technology Venture Capital Fund SCSp    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Deutschland) GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Malta) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (México), S.A. de C.V., Sociedad Operadora de Fondos de Inversión, Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Singapore) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Switzerland) AG    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (Taiwan) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management (USA) Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management Holdings (Bahamas) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Asset Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Custody Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Custody Proprietary Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Funds ICAV - Digital Leaders Equity Fund    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Funds ICAV - Euro Lower Carbon Government 10+ Year Bond UCITS ETF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Funds ICAV - Euro Lower Carbon Government 1-3 Year Bond UCITS ETF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Funds ICAV - Global Aggregate Bond ESG UCITS ETF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Funds ICAV - Japan Equity Index Fund    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.77%
HSBC GLOBAL INVESTMENT FUNDS - ASIA ESG BOND    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   93.03%
HSBC Global Investment Funds – ESG Short Duration Credit Bond    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   74.22%
HSBC GLOBAL INVESTMENT FUNDS - GLOBAL EMERGING MARKETS EQUITY    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   56.47%
HSBC Global Investment Funds - Strategic Duration and Income Bond    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Multi-asset Seeding course (Stable Type)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   67.39%
HSBC Global Services (Canada) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Services (China) Holdings Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Services (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Services (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Global Transition Infrastructure Debt Fund RAIF SICAV-S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   31.00%
HSBC Group Management Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Group Nominees UK Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Horizon 2034 2036 A 3D    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   76.72%
HSBC India Small Cap Equity Fund (QII)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   40.38%
HSBC Innovation Bank Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC INSN (Non Operating) Pte. Ltd. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Institutional Trust Services (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Institutional Trust Services (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Institutional Trust Services (Mauritius) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Institutional Trust Services (Singapore) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance (Asia-Pacific) Holdings Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance Agency (USA) Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance Brokers Greater China Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance SAC 1 (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance SAC 2 (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Insurance Services Holdings Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC International Finance Corporation (Delaware)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC International Trustee (BVI) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC International Trustee (Holdings) Pte. Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC International Trustee Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Inversiones S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC InvestDirect (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC InvestDirect Financial Services (India) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC InvestDirect Sales & Marketing (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   98.99%
HSBC InvestDirect Securities (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Investment and Insurance Brokerage, Philippines Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Investment Bank Holdings B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Investment Bank Holdings Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Investment Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Investment Funds (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Investment Funds (Luxembourg) SA    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Invoice Finance (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Issuer Services Common Depositary Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Latin America B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Latin America Holdings (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Leasing (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Legacy Partnership Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Cornell Centre) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Edwick Centre) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (International) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Property) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Singapore) Pte. Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Tsing Yi Industrial) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life (Workshop) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life Assurance (Malta) Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Life Insurance Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC LU Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Management (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Markets (USA) Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Marking Name Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Master Trust Trustee Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Mexico, S.A., Institucion de Banca Multiple, Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Middle East Asset CO. LLC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Middle East Holdings B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Middle East Securities L.L.C    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Mix Dynamique    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   58.13%
HSBC Mortgage Corporation (USA)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Nominees (Asing) Sdn Bhd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Nominees (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Nominees (New Zealand) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Nominees (Tempatan) Sdn Bhd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC North America Holdings Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Operational Services GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Overseas Holdings (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Overseas Investments Corporation (New York)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Overseas Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC PB Corporate Services 1 Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC PB Services (Suisse) SA    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Pension Trust (Ireland) DAC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Pensiones, S.A. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC PI Holdings (Mauritius) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Portfoy Yonetimi A.S.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Preferential LP (UK)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Bank (Luxembourg) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Bank (Suisse) SA    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Bank (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Banking Holdings (Suisse) SA    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Banking Nominee 3 (Jersey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Equity Investments (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Private Trustee (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Professional Services (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Property (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Property Funds (Holding) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Provident Fund Trustee (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Qianhai Securities Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   90.00%
HSBC RCF Partnership Fund RAIF SICAV-S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   11.00%
HSBC Real Estate Leasing (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC REGIO Fund General Partner S.à r.l.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC REIM (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Responsible Investment Funds - SRI Balanced    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   64.14%
HSBC Responsible Investment Funds - SRI Dynamic    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   72.79%
HSBC Retirement Benefits Trustee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Retirement Services Limited (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Saudi Arabia, Closed Joint Stock Company    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (Egypt) S.A.E. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (Japan) Co., Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (Singapore) Pte Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (South Africa) (Pty) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (Taiwan) Corporation Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities (USA) Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities and Capital Markets (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Securities Brokers (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Investments (Asia) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services (Bermuda) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services (Ireland) DAC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services (Luxembourg) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services Holdings (Ireland) DAC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Securities Services Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Seguros, S.A de C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Select Dynamic    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   80.59%
HSBC Select Equity    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   86.38%
HSBC Select Flexible    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.93%
HSBC Semfi Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   75.00%
HSBC Senior UK Direct Lending Fund II RAIF SICAV-S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   72.46%
HSBC Service Company Germany GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Service Delivery (Polska) Sp. z o.o.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Services (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Services Japan Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Services USA Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Servicios Financieros, S.A. de C.V    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Servicios, S.A. DE C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC SFT (C.I.) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Singapore Dollar Liquidity Fund    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   76.37%
HSBC Small Cap France    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   52.70%
HSBC Software Development (Guangdong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Software Development (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Software Development (Malaysia) Sdn Bhd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Specialist Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Technology & Services (USA) Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Transaction Services GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trinkaus & Burkhardt (International) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trinkaus & Burkhardt Gesellschaft fur Bankbeteiligungen mbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trinkaus & Burkhardt GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trinkaus Family Office GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trinkaus Real Estate GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trust Company (Delaware), National Association    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trust Company (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustee (C.I.) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustee (Cayman) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustee (Guernsey) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustee (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustee (Singapore) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Trustees (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC UK Bank plc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC UK Client Nominee Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC USA Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Ventures USA Inc.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Violet Investments (Mauritius) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Wealth Client Nominee Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC World Equity Protect 80    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   98.87%
HSBC Yatirim Menkul Degerler A.S.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSI Asset Securitization Corporation    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSI International Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSIL Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hubei Macheng HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hubei Suizhou Cengdu HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hubei Tianmen HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Hunan Pingjiang HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Imenson Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
INHK PC LP Inc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
INHK PE LP Inc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Inmobiliaria Bisa, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
Inmobiliaria Grufin, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Inmobiliaria Guatusi, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Internationale Kapitalanlagegesellschaft mit beschränkter Haftung    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
James Capel (Nominees) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
James Capel (Taiwan) Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Keyser Ullmann Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Lion Corporate Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Lion International Corporate Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Lion International Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Lion Management (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Lyndholme Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Marks and Spencer Financial Services plc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Marks and Spencer Unit Trust Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Midcorp Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Midland Bank (Branch Nominees) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Midland Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments Group Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments Middle East AE L.L.C.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments Netherlands B.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments Operations Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments Singapore Pte. Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
MP Payments UK Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Prudential Client HSBC GIS Nominee (UK) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
PT Bank HSBC Indonesia    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   98.94%
PT HSBC Sekuritas Indonesia    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   85.00%
R/CLIP Corp.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Real Estate Collateral Management Company    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Red Hexagon Energy Transition Asia GP S.à r.l.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Republic Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
RLUKREF Nominees (UK) One Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
RLUKREF Nominees (UK) Two Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
S.A.P.C. - Ufipro Recouvrement    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
Saf Baiyun    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Saf Guangzhou    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SCI HSBC Assurances Immo    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SCPI Elysees Grand Large    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   98.50%
Serai Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SFM    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SFSS Nominees (Pty) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Shandong Rongcheng HSBC Rural Bank Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Shenzhen HSBC Development Company Ltd    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Sico Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SilkRoad Fund Management S.à.r.l    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad GP II Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad GP II S.a.r.l.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad GP Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad GP SC S.a r.l    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad Property Partners K.K. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad Property Partners Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Silkroad Property Partners PTE. LTD.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SNC Les Oliviers D'Antibes    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   60.00%
SNCB/M6-2007 A    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SNCB/M6-2007 B    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
SNCB/M6-2008 A    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Société Française et Suisse    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Somers Dublin DAC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Somers Nominees (Far East) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Sopingest    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
South Yorkshire Light Rail Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
St Cross Trustees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Sun Hung Kai Development (Lujiazui III) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
The Hongkong and Shanghai Banking Corporation Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Tooley Street View Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Trinkaus Europa Immobilien-Fonds Nr.3 Objekt Utrecht Verwaltungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Trinkaus Immobilien-Fonds Geschaeftsfuehrungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Trinkaus Immobilien-Fonds Verwaltungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Trinkaus Private Equity Management GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Trinkaus Private Equity Verwaltungs GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Turnsonic (Nominees) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Valeurs Mobilières Elysées    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
WARDLEY LIMITED    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Wayfoong Nominees Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Woodex Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
Yan Nin Development Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | CCF & Partners Asset Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Charterhouse Administrators ( D.T.) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Charterhouse Management Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Dempar 1    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Desarrollo Turistico, S.A. de C.V. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Flandres Contentieux S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Foncière Elysées    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Fulcher Enterprises Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Fundacion HSBC, A.C.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Hang Seng (Nominee) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Bank (China) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Bank (Trustee) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Bank Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies 63.04% 63.12%
HSBC Holdings | Hang Seng Bullion Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Credit Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Data Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Data Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Financial Information Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Indexes Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Insurance Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Investment Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Investment Services Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Qianhai Fund Management Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   43.86%
HSBC Holdings | Hang Seng Real Estate Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Securities Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Hang Seng Security Management Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Haseba Investment Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | High Time Investments Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | HLF    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Assurances Vie (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Bank (China) Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSBC Bank Malaysia Berhad    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSBC Bank Middle East Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSBC Bank plc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSBC Casa de Bolsa, S.A. de C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Continental Europe    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Factoring (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Global Asset Management (Deutschland) GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Global Asset Management (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Global Asset Management (Hong Kong) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies  
HSBC Holdings | HSBC Global Asset Management (Malta) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   70.03%
HSBC Holdings | HSBC Global Asset Management (México), S.A. de C.V., Sociedad Operadora de Fondos de Inversión, Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC InvestDirect Sales & Marketing (India) Private Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   98.98%
HSBC Holdings | HSBC Life (International) Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSBC Life Assurance (Malta) Ltd.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   70.03%
HSBC Holdings | HSBC Operational Services GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Pensiones, S.A. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Private Bank (Luxembourg) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Real Estate Leasing (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC REIM (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Saudi Arabia, Closed Joint Stock Company    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   66.19%
HSBC Holdings | HSBC Securities (Egypt) S.A.E. (In Liquidation)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   94.65%
HSBC Holdings | HSBC Seguros, S.A de C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Service Company Germany GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Services (France)    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Servicios Financieros, S.A. de C.V    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Servicios, S.A. DE C.V., Grupo Financiero HSBC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Transaction Services GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Trinkaus & Burkhardt (International) S.A.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Trinkaus & Burkhardt Gesellschaft fur Bankbeteiligungen mbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Trinkaus & Burkhardt GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Trinkaus Family Office GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC Trinkaus Real Estate GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | HSBC UK Bank plc    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | HSI International Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Imenson Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%
HSBC Holdings | Inmobiliaria Grufin, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Inmobiliaria Guatusi, S.A. de C.V.    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Internationale Kapitalanlagegesellschaft mit beschränkter Haftung    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Keyser Ullmann Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Saf Baiyun    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Saf Guangzhou    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | SCI HSBC Assurances Immo    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | SFM    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | SNC Les Oliviers D'Antibes    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   59.99%
HSBC Holdings | SNCB/M6-2007 A    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | SNCB/M6-2007 B    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | SNCB/M6-2008 A    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Société Française et Suisse    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Somers Dublin DAC    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Sopingest    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | The Hongkong and Shanghai Banking Corporation Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   100.00%
HSBC Holdings | Trinkaus Europa Immobilien-Fonds Nr.3 Objekt Utrecht Verwaltungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Trinkaus Immobilien-Fonds Geschaeftsfuehrungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Trinkaus Immobilien-Fonds Verwaltungs-GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Trinkaus Private Equity Management GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Trinkaus Private Equity Verwaltungs GmbH    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Valeurs Mobilières Elysées    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   99.99%
HSBC Holdings | Yan Nin Development Company Limited    
Disclosure of subsidiaries [line items]    
Percentage of share class held by immediate parent company (or by the Group) where this varies   63.12%