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v2.4.1.9

Parent Company (Details 1) (USD $) | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
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Assets |  |  |  |  |
Cash and cash equivalents | $ 22,288,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 19,486,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 22,250,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold | $ 24,893,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold |
Investment securities | 4,431,000,000 us-gaap_AvailableForSaleSecurities | 5,016,000,000 us-gaap_AvailableForSaleSecurities | 5,614,000,000 us-gaap_AvailableForSaleSecurities |  |
Accounts receivable, less reserves | 44,386,000,000 us-gaap_AccountsReceivableNet | 43,777,000,000 us-gaap_AccountsReceivableNet |  |  |
Premises and equipment, less accumulated depreciation | 3,938,000,000 us-gaap_PropertyPlantAndEquipmentNet | 3,875,000,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |
Other assets | 11,342,000,000 us-gaap_OtherAssets | 11,228,000,000 us-gaap_OtherAssets |  |  |
Total assets | 159,103,000,000 us-gaap_Assets | 153,375,000,000 us-gaap_Assets |  |  |
Liabilities and Shareholders' Equity |  |  |  |  |
Long-term debt | 57,955,000,000 us-gaap_LongTermDebt | 55,330,000,000 us-gaap_LongTermDebt |  |  |
Total liabilities | 138,430,000,000 us-gaap_Liabilities | 133,879,000,000 us-gaap_Liabilities |  |  |
Shareholders' Equity |  |  |  |  |
Preferred shares | 0 us-gaap_PreferredStockValue | 0 us-gaap_PreferredStockValue |  |  |
Common shares | 205,000,000 us-gaap_CommonStockValue | 213,000,000 us-gaap_CommonStockValue |  |  |
Additional paid-in capital | 12,874,000,000 us-gaap_AdditionalPaidInCapital | 12,202,000,000 us-gaap_AdditionalPaidInCapital |  |  |
Retained earnings | 9,513,000,000 us-gaap_RetainedEarningsAccumulatedDeficit | 8,507,000,000 us-gaap_RetainedEarningsAccumulatedDeficit |  |  |
Accumulated other comprehensive loss | (1,919,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (1,426,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax |  |  |
Total shareholders' equity | 20,673,000,000 us-gaap_StockholdersEquity | 19,496,000,000 us-gaap_StockholdersEquity | 18,886,000,000 us-gaap_StockholdersEquity | 18,794,000,000 us-gaap_StockholdersEquity | 18,794,000,000 us-gaap_StockholdersEquity
Total liabilities and shareholders' equity | 159,103,000,000 us-gaap_LiabilitiesAndStockholdersEquity | 153,375,000,000 us-gaap_LiabilitiesAndStockholdersEquity |  |  |
Parent Company Details (Textuals) [Abstract] |  |  |  |  |
Premises and equipment, accumulated depreciation | 6,270,000,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 5,978,000,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |  |
Parent Company [Member] |  |  |  |  |
Assets |  |  |  |  |
Cash and cash equivalents | 8,824,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6,076,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,797,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6,914,000,000 us-gaap_CashCashEquivalentsAndFederalFundsSold / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Investment securities | 1,000,000 us-gaap_AvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 123,000,000 us-gaap_AvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Equity in net assets of subsidiaries and affiliates | 20,123,000,000 us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 19,571,000,000 us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Accounts receivable, less reserves | 134,000,000 us-gaap_AccountsReceivableNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 378,000,000 us-gaap_AccountsReceivableNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Premises and equipment, less accumulated depreciation | 139,000,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 136,000,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Loans to subsidiaries and affiliates | 7,809,000,000 us-gaap_LoansAndLeasesReceivableRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,236,000,000 us-gaap_LoansAndLeasesReceivableRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Due from subsidiaries and affiliates | 1,477,000,000 us-gaap_DueFromAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,126,000,000 us-gaap_DueFromAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Other assets | 365,000,000 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 335,000,000 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Total assets | 38,872,000,000 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 32,981,000,000 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Liabilities and Shareholders' Equity |  |  |  |  |
Accounts payable and other liabilities | 1,590,000,000 axp_AccountsPayableAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,386,000,000 axp_AccountsPayableAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Due to subsidiaries and affiliates | 964,000,000 us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 926,000,000 us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Short-term debt of subsidiaries and affiliates | 5,937,000,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 819,000,000 us-gaap_DueToAffiliateCurrentAndNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Long-term debt | 9,708,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 10,354,000,000 us-gaap_LongTermDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Total liabilities | 18,199,000,000 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 13,485,000,000 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Shareholders' Equity |  |  |  |  |
Preferred shares | 0 us-gaap_PreferredStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PreferredStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Common shares | 205,000,000 us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 213,000,000 us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Additional paid-in capital | 12,874,000,000 us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 12,202,000,000 us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Retained earnings | 9,513,000,000 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 8,507,000,000 us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Accumulated other comprehensive loss | (1,919,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,426,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Total shareholders' equity | 20,673,000,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 19,496,000,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Total liabilities and shareholders' equity | 38,872,000,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 32,981,000,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Parent Company Details (Textuals) [Abstract] |  |  |  |  |
Premises and equipment, accumulated depreciation | $ 106,000,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 76,000,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |

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- Definition Accounts payable represents carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Other liabilities represents carrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes. + References No definition available. + Details
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