XML 24 R46.htm IDEA: XBRL DOCUMENT v2.4.1.9
Trading Assets and Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets $ 22,444hsbcusa_TradingAssets $ 21,092hsbcusa_TradingAssets
Trading liabilities 11,288us-gaap_TradingLiabilities 8,164us-gaap_TradingLiabilities
U.S. Treasury [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 2,912hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USTreasurySecuritiesMember		 2,675hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USTreasurySecuritiesMember
US Government agency issued or guaranteed [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 4hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember		 3hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
US Government sponsored enterprises [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 103hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		 [1] 45hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		 [1]
Obligations of U.S. states and political subdivision [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 586hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember		 591hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
Asset backed securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 480hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember		 481hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_AssetBackedSecuritiesMember
Corporate and foreign bonds [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 8,525hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= hsbcusa_CorporateAndForeignBondsMember		 9,681hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= hsbcusa_CorporateAndForeignBondsMember
Other securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 18hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_OtherDebtSecuritiesMember		 22hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_OtherDebtSecuritiesMember
Precious metals [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 3,310hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommoditiesInvestmentMember		 1,992hsbcusa_TradingAssets
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommoditiesInvestmentMember
Trading liabilities 0us-gaap_TradingLiabilities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommoditiesInvestmentMember		 22us-gaap_TradingLiabilities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommoditiesInvestmentMember
Securities sold, not yet purchased [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading liabilities 646us-gaap_TradingLiabilities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_SecuritiesSoldNotYetPurchasedMember		 683us-gaap_TradingLiabilities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_SecuritiesSoldNotYetPurchasedMember
Derivatives [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets 6,506hsbcusa_TradingAssets
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_DerivativeMember		 5,602hsbcusa_TradingAssets
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_DerivativeMember
Derivatives [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading liabilities 10,642us-gaap_TradingLiabilities
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeMember		 7,459us-gaap_TradingLiabilities
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeMember
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] | US Government sponsored enterprises [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Trading assets $ 103hsbcusa_TradingAssets
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember		 $ 45hsbcusa_TradingAssets
/ us-gaap_GuaranteeObligationsByNatureAxis
= us-gaap_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
[1] Consists of mortgage backed securities of $103 million and $45 million issued or guaranteed by the Federal National Mortgage Association ("FNMA") at March 31, 2015 and December 31, 2014, respectively.