3.19.1 html 123 145 1 true 37 0 false 4 false false R1.htm 000000 - Document - Document and Entity Information Sheet http://americanexpresscreditcorp.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 000010 - Statement - Consolidated Statements of Income Sheet http://americanexpresscreditcorp.com/role/ConsolidatedStatementsOfIncome Consolidated Statements of Income Statements 2 false false R3.htm 000015 - Statement - Consolidated Statement of Comprehensive Income Sheet http://americanexpresscreditcorp.com/role/ConsolidatedStatementOfComprehensiveIncome Consolidated Statement of Comprehensive Income Statements 3 false false R4.htm 000020 - Statement - Consolidated Balance Sheets Sheet http://americanexpresscreditcorp.com/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 4 false false R5.htm 000025 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://americanexpresscreditcorp.com/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 5 false false R6.htm 000030 - Statement - Consolidated Statements of Cash Flows Sheet http://americanexpresscreditcorp.com/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 6 false false R7.htm 000033 - Statement - Consolidated Statement of Cash Flows (Parenthetical) Sheet http://americanexpresscreditcorp.com/role/ConsolidatedStatementOfCashFlowsParenthetical Consolidated Statement of Cash Flows (Parenthetical) Statements 7 false false R8.htm 000035 - Statement - Consolidated Statement of Shareholder's Equity Sheet http://americanexpresscreditcorp.com/role/ConsolidatedStatementOfShareholdersEquity Consolidated Statement of Shareholder's Equity Statements 8 false false R9.htm 100050 - Disclosure - Basis of Presentation Sheet http://americanexpresscreditcorp.com/role/BasisOfPresentation Basis of Presentation Notes 9 false false R10.htm 100100 - Disclosure - Card Member Receivables and Card Member Loans Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoans Card Member Receivables and Card Member Loans Notes 10 false false R11.htm 100150 - Disclosure - Reserves for Losses Sheet http://americanexpresscreditcorp.com/role/ReservesForLosses Reserves for Losses Notes 11 false false R12.htm 100200 - Disclosure - Derivatives and Hedging Activities Sheet http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivities Derivatives and Hedging Activities Notes 12 false false R13.htm 100300 - Disclosure - Fair Values Sheet http://americanexpresscreditcorp.com/role/FairValues Fair Values Notes 13 false false R14.htm 101100 - Disclosure - Changes in Accumulated Other Comprehensive Income Sheet http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncome Changes in Accumulated Other Comprehensive Income Notes 14 false false R15.htm 101200 - Disclosure - Income Taxes Sheet http://americanexpresscreditcorp.com/role/DisclosureIncomeTaxes Income Taxes Notes 15 false false R16.htm 200000 - Disclosure - Significant Accounting Policies (Policies) Sheet http://americanexpresscreditcorp.com/role/DisclosureSignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) Policies 16 false false R17.htm 300010 - Disclosure - Card Member Receivables and Card Member Loans (Tables) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables Card Member Receivables and Card Member Loans (Tables) Tables http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoans 17 false false R18.htm 300015 - Disclosure - Reserves for Losses (Tables) Sheet http://americanexpresscreditcorp.com/role/ReservesForLossesTables Reserves for Losses (Tables) Tables http://americanexpresscreditcorp.com/role/ReservesForLosses 18 false false R19.htm 300020 - Disclosure - Derivatives and Hedging Activities (Tables) Sheet http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivitiesTables Derivatives and Hedging Activities (Tables) Tables http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivities 19 false false R20.htm 300070 - Disclosure - Fair Values (Tables) Sheet http://americanexpresscreditcorp.com/role/FairValuesTables Fair Values (Tables) Tables http://americanexpresscreditcorp.com/role/FairValues 20 false false R21.htm 300110 - Disclosure - Changes in Accumulated Other Comprehensive Income (Tables) Sheet http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeTables Changes in Accumulated Other Comprehensive Income (Tables) Tables http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncome 21 false false R22.htm 400100 - Disclosure - Summary of Significant Accounting Policies Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/SummaryOfSignificantAccountingPoliciesTextualsDetails Summary of Significant Accounting Policies Textuals (Details) Details 22 false false R23.htm 400200 - Disclosure - Card Member Receivables and Card Member Loans (Details) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansDetails Card Member Receivables and Card Member Loans (Details) Details http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables 23 false false R24.htm 400210 - Disclosure - Card Member Receivables and Card Member Loans 1 (Details) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoans1Details Card Member Receivables and Card Member Loans 1 (Details) Details http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables 24 false false R25.htm 400220 - Disclosure - Card Member Receivables and Card Member Loans 2 (Details) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoans2Details Card Member Receivables and Card Member Loans 2 (Details) Details http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables 25 false false R26.htm 400230 - Disclosure - Card Member Receivables and Card Member Loans 3 (Details) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoans3Details Card Member Receivables and Card Member Loans 3 (Details) Details http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables 26 false false R27.htm 400240 - Disclosure - Card Member Receivables and Card Member Loans Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTextualsDetails Card Member Receivables and Card Member Loans Textuals (Details) Details http://americanexpresscreditcorp.com/role/CardMemberReceivablesAndCardMemberLoansTables 27 false false R28.htm 400300 - Disclosure - Reserves (Details) Sheet http://americanexpresscreditcorp.com/role/DisclosureReservesDetails Reserves (Details) Details http://americanexpresscreditcorp.com/role/ReservesForLossesTables 28 false false R29.htm 400310 - Disclosure - Reserves 1 (Details) Sheet http://americanexpresscreditcorp.com/role/Reserves1Details Reserves 1 (Details) Details http://americanexpresscreditcorp.com/role/ReservesForLossesTables 29 false false R30.htm 400320 - Disclosure - Reserves Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/ReservesTextualsDetails Reserves Textuals (Details) Details 30 false false R31.htm 400700 - Disclosure - Derivatives and Hedging Activities (Details) Sheet http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivitiesDetails Derivatives and Hedging Activities (Details) Details http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivitiesTables 31 false false R32.htm 400710 - Disclosure - Derivatives and Hedging Activities 1 (Details) Sheet http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivities1Details Derivatives and Hedging Activities 1 (Details) Details http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivitiesTables 32 false false R33.htm 400750 - Disclosure - Derivatives and Hedging Activities Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/DerivativesAndHedgingActivitiesTextualsDetails Derivatives and Hedging Activities Textuals (Details) Details 33 false false R34.htm 400800 - Disclosure - Fair Value (Details) Sheet http://americanexpresscreditcorp.com/role/FairValueDetails Fair Value (Details) Details http://americanexpresscreditcorp.com/role/FairValuesTables 34 false false R35.htm 400810 - Disclosure - Fair Value 1 (Details) Sheet http://americanexpresscreditcorp.com/role/FairValue1Details Fair Value 1 (Details) Details http://americanexpresscreditcorp.com/role/FairValuesTables 35 false false R36.htm 400820 - Disclosure - Fair Value Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/FairValueTextualsDetails Fair Value Textuals (Details) Details 36 false false R37.htm 401100 - Disclosure - Changes In Accumulated Other Comprehensive Income (Details) Sheet http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeDetails Changes In Accumulated Other Comprehensive Income (Details) Details 37 false false R38.htm 401110 - Disclosure - Changes in Accumulated Other Comprehensive Income (Loss) 1 (Details) Sheet http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeLoss1Details Changes in Accumulated Other Comprehensive Income (Loss) 1 (Details) Details http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeTables 38 false false R39.htm 401120 - Disclosure - Changes in Accumulated Other Comprehensive Income (Loss) Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeLossTextualsDetails Changes in Accumulated Other Comprehensive Income (Loss) Textuals (Details) Details http://americanexpresscreditcorp.com/role/ChangesInAccumulatedOtherComprehensiveIncomeTables 39 false false R40.htm 401240 - Disclosure - Income Taxes Textuals (Details) Sheet http://americanexpresscreditcorp.com/role/IncomeTaxesTextualsDetails Income Taxes Textuals (Details) Details 40 false false All Reports Book All Reports aexc-20190331.xml aexc-20190331.xsd aexc-20190331_cal.xml aexc-20190331_def.xml aexc-20190331_lab.xml aexc-20190331_pre.xml http://fasb.org/us-gaap/2018-01-31 http://xbrl.sec.gov/dei/2018-01-31 http://fasb.org/srt/2018-01-31 true true