2.4.0.82423404 - Disclosure - Business Segments - Reconciliation of IFRS Basis Segment Results (Detail)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$D2013Q2http://www.sec.gov/CIK0000354964duration2013-04-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$D2012Q2http://www.sec.gov/CIK0000354964duration2012-04-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$D2013Q2YTDhttp://www.sec.gov/CIK0000354964duration2013-01-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$D2012Q2YTDhttp://www.sec.gov/CIK0000354964duration2012-01-01T00:00:002012-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3hsbcfc_OperatingStatisticsLineItemshsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating Statistics [Line Items]2false 4us-gaap_InterestIncomeExpenseNetus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse238000000238USD$falsetruefalse2truefalsefalse391000000391USD$falsetruefalse3truefalsefalse632000000632USD$falsetruefalse4truefalsefalse799000000799USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe net amount of operating interest income (expense).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.10) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 10 -Article 9 false2US GAAP based Net interest income3false 4us-gaap_NoninterestIncomeOtherOperatingIncomeus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse628000000628USD$falsefalsefalse2truefalsefalse-1865000000-1865USD$falsefalsefalse3truefalsefalse982000000982USD$falsefalsefalse4truefalsefalse-2060000000-2060USD$falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents other forms of revenue earned, excluding interest, which is not otherwise specified in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 false2US GAAP based Other operating income (Total other revenues)4false 4us-gaap_OperatingIncomeLossus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse866000000866USD$falsefalsefalse2truefalsefalse-1474000000-1474USD$falsefalsefalse3truefalsefalse16140000001614USD$falsefalsefalse4truefalsefalse-1261000000-1261USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe net result for the period of deducting operating expenses from operating revenues.No definition available.true2US GAAP based Total operating income (loss)5false 4us-gaap_ProvisionForLoanAndLeaseLossesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse267000000267[1]USD$falsefalsefalse2truefalsefalse738000000738[1],[2]USD$falsefalsefalse3truefalsefalse291000000291[1]USD$falsefalsefalse4truefalsefalse15290000001529[1],[2]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of expense related to estimated loss from loan and lease transactions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 false2US GAAP based Loan impairment charges (Provision for credit losses)6false 4hsbcfc_OperatingIncomeNethsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse599000000599USD$falsefalsefalse2truefalsefalse-2212000000-2212USD$falsefalsefalse3truefalsefalse13230000001323USD$falsefalsefalse4truefalsefalse-2790000000-2790USD$falsefalsefalsexbrli:monetaryItemTypemonetaryOperating Income, NetNo definition available.true2US GAAP Net interest income and other operating income less provision for credit losses7false 4us-gaap_NoninterestExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse195000000195USD$falsefalsefalse2truefalsefalse239000000239USD$falsefalsefalse3truefalsefalse463000000463USD$falsefalsefalse4truefalsefalse454000000454USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTotal aggregate amount of all noninterest expense.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 14 -Article 9 false2US GAAP based Operating expenses8false 4us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestmentsus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse404000000404USD$falsefalsefalse2truefalsefalse-2451000000-2451USD$falsefalsefalse3truefalsefalse860000000860USD$falsefalsefalse4truefalsefalse-3244000000-3244USD$falsefalsefalsexbrli:monetaryItemTypemonetarySum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 true2Income (loss) from continuing operations before income tax9false 4us-gaap_AccountsReceivableGrossus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse2911200000029112USD$falsefalsefalse2truefalsefalse3495500000034955USD$falsefalsefalse3truefalsefalse2911200000029112USD$falsefalsefalse4truefalsefalse3495500000034955USD$falsefalsefalsexbrli:monetaryItemTypemonetaryFor unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.9) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 false2Customer loans (Receivables)10false 4hsbcfc_AssetsOfContinuingOperationshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4187200000041872USD$falsefalsefalse2truefalsefalse4929200000049292USD$falsefalsefalse3truefalsefalse4187200000041872USD$falsefalsefalse4truefalsefalse4929200000049292USD$falsefalsefalsexbrli:monetaryItemTypemonetaryAssets of continuing operations.No definition available.false2US GAAP based Assets11false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5false USDtruefalse$D2013Q2_us-gaap_StatementBusinessSegmentsAxis_hsbcfc_InternationalFinancialReportingStandardsBasisMemberhttp://www.sec.gov/CIK0000354964duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseIFRS Basis Consolidated Totalsus-gaap_StatementBusinessSegmentsAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_InternationalFinancialReportingStandardsBasisMemberus-gaap_StatementBusinessSegmentsAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0IFRS Basis Consolidated Totals12true 3hsbcfc_OperatingStatisticsLineItemshsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating Statistics [Line Items]13false 4hsbcfc_IfrsBasedNetInterestIncomehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse493000000493USD$falsefalsefalse2truefalsefalse622000000622USD$falsefalsefalse3truefalsefalse11290000001129USD$falsefalsefalse4truefalsefalse12670000001267USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIfrs based net interest income.No definition available.false2IFRS based Net interest income14false 4hsbcfc_IfrsBasedOtherOperatingIncomeExpensehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-116000000-116USD$falsefalsefalse2truefalsefalse-431000000-431USD$falsefalsefalse3truefalsefalse-315000000-315USD$falsefalsefalse4truefalsefalse-748000000-748USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Other Operating Income (Expense)No definition available.false2IFRS based Other operating income (Total other revenues)15false 4hsbcfc_IfrsBasedOperatingRevenuehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse377000000377USD$falsefalsefalse2truefalsefalse191000000191USD$falsefalsefalse3truefalsefalse814000000814USD$falsefalsefalse4truefalsefalse519000000519USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based operating revenue.No definition available.true2IFRS based Total operating income (loss)16false 4hsbcfc_IfrsBasedProvisionForLoanAndLeaseLosseshsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse124000000124USD$falsefalsefalse2truefalsefalse720000000720USD$falsefalsefalse3truefalsefalse443000000443USD$falsefalsefalse4truefalsefalse15750000001575USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based provision for loan and lease losses.No definition available.false2IFRS based Loan impairment charges (Provision for credit losses)17false 4hsbcfc_IfrsBasedOperatingIncomeNethsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse253000000253USD$falsefalsefalse2truefalsefalse-529000000-529USD$falsefalsefalse3truefalsefalse371000000371USD$falsefalsefalse4truefalsefalse-1056000000-1056USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Operating Income, NetNo definition available.true2IFRS based Net interest income and other operating income less provision for credit losses18false 4hsbcfc_IfrsBasedNoninterestExpensehsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse153000000153USD$falsefalsefalse2truefalsefalse221000000221USD$falsefalsefalse3truefalsefalse408000000408USD$falsefalsefalse4truefalsefalse410000000410USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based noninterest expense.No definition available.false2IFRS based Operating expense19false 4hsbcfc_IfrsBasedIncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestmentshsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse100000000100USD$falsefalsefalse2truefalsefalse-750000000-750USD$falsefalsefalse3truefalsefalse-37000000-37USD$falsefalsefalse4truefalsefalse-1466000000-1466USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based income loss from continuing operations before income taxes minority interest and income loss from equity method investments.No definition available.true2IFRS based Profit (loss) before tax20false 4hsbcfc_IfrsBasedAccountsReceivableGrosshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3449800000034498USD$falsefalsefalse2truefalsefalse4443700000044437USD$falsefalsefalse3truefalsefalse3449800000034498USD$falsefalsefalse4truefalsefalse4443700000044437USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based accounts receivable grossNo definition available.false2IFRS based Customer loans (Receivables)21false 4hsbcfc_IfrsBasedAssetsOfContinuingOperationshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4383900000043839USD$falsefalsefalse2truefalsefalse5269600000052696USD$falsefalsefalse3truefalsefalse4383900000043839USD$falsefalsefalse4truefalsefalse5269600000052696USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based assets of continuing operations.No definition available.false2IFRS based Assets22false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse9false USDtruefalse$D2013Q2_us-gaap_StatementBusinessSegmentsAxis_hsbcfc_InternationalFinancialReportingStandardsAdjustmentsMemberhttp://www.sec.gov/CIK0000354964duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseIFRS Adjustmentsus-gaap_StatementBusinessSegmentsAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_InternationalFinancialReportingStandardsAdjustmentsMemberus-gaap_StatementBusinessSegmentsAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0IFRS Adjustments23true 3hsbcfc_OperatingStatisticsLineItemshsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating Statistics [Line Items]24false 4hsbcfc_IfrsBasedNetInterestIncomehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-168000000-168[3]USD$falsefalsefalse2truefalsefalse-127000000-127[3]USD$falsefalsefalse3truefalsefalse-327000000-327[3]USD$falsefalsefalse4truefalsefalse-249000000-249[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIfrs based net interest income.No definition available.false2IFRS based Net interest income25false 4hsbcfc_IfrsBasedOtherOperatingIncomeExpensehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse658000000658[3]USD$falsefalsefalse2truefalsefalse-1550000000-1550[3]USD$falsefalsefalse3truefalsefalse11200000001120[3]USD$falsefalsefalse4truefalsefalse-1563000000-1563[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Other Operating Income (Expense)No definition available.false2IFRS based Other operating income (Total other revenues)26false 4hsbcfc_IfrsBasedOperatingRevenuehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse490000000490[3]USD$falsefalsefalse2truefalsefalse-1677000000-1677[3]USD$falsefalsefalse3truefalsefalse793000000793[3]USD$falsefalsefalse4truefalsefalse-1812000000-1812[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based operating revenue.No definition available.true2IFRS based Total operating income (loss)27false 4hsbcfc_IfrsBasedProvisionForLoanAndLeaseLosseshsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse143000000143[3]USD$falsefalsefalse2truefalsefalse1800000018[3]USD$falsefalsefalse3truefalsefalse-152000000-152[3]USD$falsefalsefalse4truefalsefalse-46000000-46[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based provision for loan and lease losses.No definition available.false2IFRS based Loan impairment charges (Provision for credit losses)28false 4hsbcfc_IfrsBasedOperatingIncomeNethsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse347000000347[3]USD$falsefalsefalse2truefalsefalse-1695000000-1695[3]USD$falsefalsefalse3truefalsefalse945000000945[3]USD$falsefalsefalse4truefalsefalse-1766000000-1766[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Operating Income, NetNo definition available.true2IFRS based Net interest income and other operating income less provision for credit losses29false 4hsbcfc_IfrsBasedNoninterestExpensehsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse4300000043[3]USD$falsefalsefalse2truefalsefalse60000006[3]USD$falsefalsefalse3truefalsefalse4800000048[3]USD$falsefalsefalse4truefalsefalse1200000012[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based noninterest expense.No definition available.false2IFRS based Operating expense30false 4hsbcfc_IfrsBasedIncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestmentshsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse304000000304[3]USD$falsefalsefalse2truefalsefalse-1701000000-1701[3]USD$falsefalsefalse3truefalsefalse897000000897[3]USD$falsefalsefalse4truefalsefalse-1778000000-1778[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based income loss from continuing operations before income taxes minority interest and income loss from equity method investments.No definition available.true2IFRS based Profit (loss) before tax31false 4hsbcfc_IfrsBasedAccountsReceivableGrosshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-5346000000-5346[3]USD$falsefalsefalse2truefalsefalse-9435000000-9435[3]USD$falsefalsefalse3truefalsefalse-5346000000-5346[3]USD$falsefalsefalse4truefalsefalse-9435000000-9435[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based accounts receivable grossNo definition available.false2IFRS based Customer loans (Receivables)32false 4hsbcfc_IfrsBasedAssetsOfContinuingOperationshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-1967000000-1967[3]USD$falsefalsefalse2truefalsefalse-3404000000-3404[3]USD$falsefalsefalse3truefalsefalse-1967000000-1967[3]USD$falsefalsefalse4truefalsefalse-3404000000-3404[3]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based assets of continuing operations.No definition available.false2IFRS based Assets33false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse13false USDtruefalse$D2013Q2_us-gaap_StatementBusinessSegmentsAxis_hsbcfc_InternationalFinancialReportingStandardsReclassificationsMemberhttp://www.sec.gov/CIK0000354964duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseIFRS Reclassificationsus-gaap_StatementBusinessSegmentsAxisxbrldihttp://xbrl.org/2006/xbrldihsbcfc_InternationalFinancialReportingStandardsReclassificationsMemberus-gaap_StatementBusinessSegmentsAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0IFRS Reclassifications34true 3hsbcfc_OperatingStatisticsLineItemshsbcfc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Operating Statistics [Line Items]35false 4hsbcfc_IfrsBasedNetInterestIncomehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-87000000-87[4]USD$falsefalsefalse2truefalsefalse-104000000-104[4]USD$falsefalsefalse3truefalsefalse-170000000-170[4]USD$falsefalsefalse4truefalsefalse-219000000-219[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIfrs based net interest income.No definition available.false2IFRS based Net interest income36false 4hsbcfc_IfrsBasedOtherOperatingIncomeExpensehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse8600000086[4]USD$falsefalsefalse2truefalsefalse116000000116[4]USD$falsefalsefalse3truefalsefalse177000000177[4]USD$falsefalsefalse4truefalsefalse251000000251[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Other Operating Income (Expense)No definition available.false2IFRS based Other operating income (Total other revenues)37false 4hsbcfc_IfrsBasedOperatingRevenuehsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse-1000000-1[4]USD$falsefalsefalse2truefalsefalse1200000012[4]USD$falsefalsefalse3truefalsefalse70000007[4]USD$falsefalsefalse4truefalsefalse3200000032[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based operating revenue.No definition available.true2IFRS based Total operating income (loss)38false 4hsbcfc_IfrsBasedProvisionForLoanAndLeaseLosseshsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00[4]USD$falsefalsefalse2truefalsefalse00[4]USD$falsefalsefalse3truefalsefalse00[4]USD$falsefalsefalse4truefalsefalse00[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based provision for loan and lease losses.No definition available.false2IFRS based Loan impairment charges (Provision for credit losses)39false 4hsbcfc_IfrsBasedOperatingIncomeNethsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse-1000000-1[4]USD$falsefalsefalse2truefalsefalse1200000012[4]USD$falsefalsefalse3truefalsefalse70000007[4]USD$falsefalsefalse4truefalsefalse3200000032[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS Based Operating Income, NetNo definition available.true2IFRS based Net interest income and other operating income less provision for credit losses40false 4hsbcfc_IfrsBasedNoninterestExpensehsbcfc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-1000000-1[4]USD$falsefalsefalse2truefalsefalse1200000012[4]USD$falsefalsefalse3truefalsefalse70000007[4]USD$falsefalsefalse4truefalsefalse3200000032[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based noninterest expense.No definition available.false2IFRS based Operating expense41false 4hsbcfc_IfrsBasedIncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestmentshsbcfc_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse00[4]USD$falsefalsefalse2truefalsefalse00[4]USD$falsefalsefalse3truefalsefalse00[4]USD$falsefalsefalse4truefalsefalse00[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based income loss from continuing operations before income taxes minority interest and income loss from equity method investments.No definition available.true2IFRS based Profit (loss) before tax42false 4hsbcfc_IfrsBasedAccountsReceivableGrosshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-40000000-40[4]USD$falsefalsefalse2truefalsefalse-47000000-47[4]USD$falsefalsefalse3truefalsefalse-40000000-40[4]USD$falsefalsefalse4truefalsefalse-47000000-47[4]USD$falsefalsefalsexbrli:monetaryItemTypemonetaryIFRS based accounts receivable grossNo definition available.false2IFRS based Customer loans (Receivables)43false 4hsbcfc_IfrsBasedAssetsOfContinuingOperationshsbcfc_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse00[4]USD$falsetruefalse2truefalsefalse00[4]USD$falsetruefalse3truefalsefalse00[4]USD$falsetruefalse4truefalsefalse00[4]USD$falsetruefalsexbrli:monetaryItemTypemonetaryIFRS based assets of continuing operations.No definition available.false2IFRS based Assets1These amounts represent TDR Loans for which we evaluate reserves using a discounted cash flow methodology. Each loan is individually identified as a TDR Loan and then grouped together with other TDR Loans with similar characteristics. The discounted cash flow impairment analysis is then applied to these groups of TDR Loans. The receivable balance above excludes TDR Loans that are carried at the lower of amortized cost or fair value of the collateral less cost to sell which totaled $726 million and $671 million at June 30, 2013 and 2012, respectively. The reserve component above excludes credit loss reserves for TDR Loans that are carried at the lower of amortized cost or fair value of the collateral less cost to sell which totaled $51 million and $41 million at June 30, 2013 and 2012, respectively. These credit loss reserves are reflected within receivables carried at the lower of amortized cost or fair value of the collateral less cost to sell in the table above.2The three and six months ended June 30, 2012 includes $112 million related to the lower of amortized cost or fair value attributable to credit for personal non-credit card receivables transferred to held for sale at June 30, 2012. See Note 6, "Receivables Held for Sale," for additional information.3IFRS Adjustments consist of the accounting differences between U.S. GAAP and IFRSs which have been described more fully above.4Represents differences in balance sheet and income statement presentation between U.S. GAAP and IFRSs.falseBusiness Segments - Reconciliation of IFRS Basis Segment Results (Detail) (USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.us.hsbc.com/role/BusinessSegmentsReconciliationOfIfrsBasisSegmentResultsDetail443