XML 72 R61.htm IDEA: XBRL DOCUMENT
v3.19.2

Customer Deposits (Details Textuals) | 6 Months Ended
--- | ---
Jun. 30, 2019
Banking and Thrift [Abstract] |
Weighted average remaining maturity (in months) | 49 months
Weighted average interest rate (as a percentage) | 2.47%

X
- Definition Weighted Average Maturity Certificates of Deposits + References No definition available. + Details
Name: | axp_WeightedAverageMaturityCertificatesofDeposits
Namespace Prefix: | axp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BankingAndThriftAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average interest rate for domestic certificates of deposit liabilities. + References No definition available. + Details
Name: | us-gaap_WeightedAverageRateDomesticDepositCertificatesOfDeposit
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant