Card Member Receivables and Card Member Loans (Details 2) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Card Member Receivables [Member]
Financing receivable recorded investment aging
Card Member receivables total aging	$ 9,406	$ 25,557
Global Consumer Services Group [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Current	2,026	9,766
Card Member receivables total aging	2,060	9,847
Global Consumer Services Group [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Current	597	689
Card Member loans total aging	606	697
Global Consumer Services Group [Member] \| 30-59 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	12	29
Global Consumer Services Group [Member] \| 30-59 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	3	3
Global Consumer Services Group [Member] \| 60-89 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	7	16
Global Consumer Services Group [Member] \| 60-89 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	2	2
Global Consumer Services Group [Member] \| 90+ Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	15	36
Global Consumer Services Group [Member] \| 90+ Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	4	3
Global Small Business Services [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Current	947	1,996
Card Member receivables total aging	963	2,020
Global Small Business Services [Member] \| 30-59 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	6	10
Global Small Business Services [Member] \| 60-89 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	3	5
Global Small Business Services [Member] \| 90+ Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	7	9
Global Corporate Payments [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Card Member receivables total aging	6,383	13,690
Global Corporate Payments [Member] \| 90+ Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	$ 106	$ 105

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Amount of financing receivable not past due.

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Amount of financing receivable past due.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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