Increase (decrease) through exercise of options, equity Other comprehensive income, net of tax, change in fair value of financial liability attributable to change in credit risk of liability Interest income (expense) Increase (Decrease) Through Transfer Between Merger Reserve And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Merger Reserve And Retained Earnings, Equity Increase (Decrease) Through Transfer Between Merger Reserve And Retained Earnings, Equity Equity Instruments, Interest Rate Equity Instruments, Interest Rate Operating Income, Before Insurance Claims And Benefits Paid And Movement In Liabilities To Policyholders And Loan Impairment Charges And Other Credit Risk Provisions Operating Income, Before Insurance Claims And Benefits Paid And Movement In Liabilities To Policyholders And Loan Impairment Charges And Other Credit Risk Provisions Operating Income, Before Insurance Claims And Benefits Paid And Movement In Liabilities To Policyholders And Loan Impairment Charges And Other Credit Risk Provisions Loans and advances to banks Adjustments For Increase (Decrease) In Debt Securities In Issue Adjustments For Increase (Decrease) In Debt Securities In Issue Other Comprehensive Income, Net Of Tax, Gains (Losses) From Effects Of Hyperinflation Other Comprehensive Income, Net Of Tax, Gains (Losses) From Effects Of Hyperinflation Prepayments, Accrued Income And Other Assets Prepayments, Accrued Income And Other Assets Balance Sheet Location1 [Domain] [Domain] for Balance Sheet Location [Axis] Hsbc Finance Corporation [Member] Hsbc Finance Corporation Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Other provisions Adjustments For Decrease (Increase) In Financial Assets At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently Adjustments For Decrease (Increase) In Financial Assets At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently Cash Inflow (Outflow) From Disposal (Purchase) Of Subsidiaries, Businesses, Associates, And Joint Ventures Net Cash Inflow (Outflow) From Acquisition And Disposal Of Subsidiaries, Businesses, Associates, And Joint Ventures Financial Assets At Fair Value Through Other Comprehensive Income And At Amortised Cost Financial Assets At Fair Value Through Other Comprehensive Income And At Amortised Cost Financial Assets At Fair Value Through Profit Or Loss, Excluding Those Classified As Held For Trading Financial Assets At Fair Value Through Profit Or Loss, Excluding Those Classified As Held For Trading HSBC Continental Europe [Member] HSBC Continental Europe Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax $2,350m 6.250% Perpetual Subordinated Contingent Convertible Securities [Member] $2,350m 6.250% Perpetual Subordinated Contingent Convertible Securities [Member] SGD 750m 5.000% Perpetual Subordinated Contingent Convertible Securities [Member] SGD 750m 5.000% Perpetual Subordinated Contingent Convertible Securities Profit (Loss) Attributable To Preference Equity Holders Of Parent Entity Profit (Loss) Attributable To Preference Equity Holders Of Parent Entity Operating expense Net Operating Income Net Operating Income Net Operating Income Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income Cash And Bank Balances At Central Banks [Member] Cash And Bank Balances At Central Banks [Member] Profit (Loss) Attributable To Other Equity Holders Of Parent Entity Profit (Loss) Attributable To Other Equity Holders Of Parent Entity Loans And Advances To Banks [Member] Loans And Advances To Banks [Member] Reverse Repurchase Agreement [Member] Reverse Repurchase Agreement [Member] Cash flows from (used in) operating activities Adjustments For Increase (Decrease) In Net Trading Securities And Derivatives Adjustments For Increase (Decrease) In Net Trading Securities And Derivatives Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss, Current Year Share, Net Of Tax Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method That Will Be Reclassified To Profit Or Loss, Current Year Share, Net Of Tax Short-term Investments And Deposits, Classified As Cash Equivalents Short-term Investments And Deposits, Classified As Cash Equivalents Reverse repurchase agreements and cash collateral on securities borrowed Items In Course Of Transmission To Other Banks [Member] Items In Course Of Transmission To Other Banks [Member] Cash flows from (used in) financing activities Hsbc Overseas Holdings Uk Limited [Member] Hsbc Overseas Holdings Uk Limited Comprehensive Income, Attributable To Other Equity Owners Of Parent Comprehensive Income, Attributable To Other Equity Owners Of Parent Adjustments For Increase (Decrease) In Deposits To Bank And Customer Accounts Adjustments For Increase (Decrease) In Deposits To Bank And Customer Accounts Adjustments For Gain (Loss) On Disposal/Acquisition Of Investments In Subsidiaries, Joint Ventures And Associates Adjustments For Gain (Loss) On Disposal/Acquisition Of Investments In Subsidiaries, Joint Ventures And Associates Assets [abstract] Accruals, Deferred Income And Other Liabilities Accruals, Deferred Income And Other Liabilities Equity, Cumulative Acquisition Value Equity, Cumulative Acquisition Value Comprehensive Income, Attributable To Preference Equity Owners Of Parent Comprehensive Income, Attributable To Preference Equity Owners Of Parent Balance Sheet Location1 [Axis] Balance Sheet Location [Axis] Cash flows from (used in) investing activities Proceeds (Payments) From Sale (Purchase) Of Treasury Shares Proceeds (Payments) From Sale (Purchase) Of Treasury Shares Net Cash Inflow (Outflow) From Disposal Of Customer And Loan Portfolios Net Cash Inflow (Outflow) From Disposal Of Customer And Loan Portfolios Gain (Loss) Net Monetary Positions, Hyperinflation Effect Gain (Loss) Net Monetary Positions, Hyperinflation Effect Cash Collateral And Net Settlement Accounts Cash Collateral And Net Settlement Accounts Fee and commission income (expense) Loss On Disposal of Treasury Markets Repositioning Loss On Disposal of Treasury Markets Repositioning Impairment Loss Recognised in Profit (Loss), Interest In Associates Impairment Loss Recognised in Profit (Loss), Interest In Associates Impairment Loss Recognised in Profit (Loss), Interest In Associates Adjustments For Increase (Decrease) In Financial Liabilities At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently Adjustments For Increase (Decrease) In Financial Liabilities At Fair Value Through Profit Or Loss, Designated Upon Initial Recognition Or Subsequently Reduction of issued capital EUR 1,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] EUR 1,000m 6.000% Perpetual Subordinated Contingent Convertible Securities [Member] Payments Of Contributions To Defined Benefit Plans Payments Of Contributions To Defined Benefit Plans Gain (Loss) From Investing Activities Gain (Loss) From Investing Activities Issued Capital And Share Premium [Member] Issued Capital And Share Premium Adjustments For Decrease (Increase) In Loans And Advances To Bank And Customers Adjustments For Decrease (Increase) In Loans And Advances To Bank And Customers Revenue and other operating income Loans And Advances To Banks Of One Month Or Less Loans And Advances To Banks Of One Month Or Less Comprehensive Income, Attributable To Ordinary Equity Owners Of Parent Comprehensive Income, Attributable To Ordinary Equity Owners Of Parent Proceeds From Issuing Shares And Other Equity Instruments Proceeds From Issuing Shares And Other Equity Instruments Equity, Cumulative Goodwill Equity, Cumulative Goodwill Other equity instruments Other comprehensive income, net of tax, gains (losses) from investments in equity instruments $2,000m 8% Perpetual Subordinated Contingent Convertible Securities [Member] $2,000m 8% Perpetual Subordinated Contingent Convertible Securities