Loans and Accounts Receivable (Details 2) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Financing receivable recorded investment aging
Card Member loans total aging	$ 83,230	$ 81,854
Card Member receivables total aging	58,708	55,893
Global Consumer Services Group [Member]
Financing receivable recorded investment aging
Card Member loans total aging	69,743	69,458
Card Member receivables total aging	21,192	21,455
Global Consumer Services Group [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Current	68,745	68,442
Global Consumer Services Group [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Current	20,923	21,207
Global Consumer Services Group [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	286	290
Global Consumer Services Group [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	90	80
Global Consumer Services Group [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	213	220
Global Consumer Services Group [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	51	50
Global Consumer Services Group [Member] \| 90+ days past due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	499	506
Global Consumer Services Group [Member] \| 90+ days past due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	128	118
Global Commercial Services [Member]
Financing receivable recorded investment aging
Card Member loans total aging	13,487	12,396
Card Member receivables total aging	37,516	34,438
Global Small Business Services [Member]
Financing receivable recorded investment aging
Card Member loans total aging	13,443	12,351
Card Member receivables total aging	17,806	16,728
Global Small Business Services [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Current	13,275	12,195
Global Small Business Services [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Current	17,521	16,460
Global Small Business Services [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	55	51
Global Small Business Services [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	108	101
Global Small Business Services [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	36	32
Global Small Business Services [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	56	53
Global Small Business Services [Member] \| 90+ days past due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	77	73
Global Small Business Services [Member] \| 90+ days past due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	121	114
Global Corporate Payments [Member]
Financing receivable recorded investment aging
Card Member loans total aging	44	45
Card Member receivables total aging	19,710	17,710
Global Corporate Payments [Member] \| 90+ days past due [Member] \| Card Member Loans [Member]
Financing receivable recorded investment aging
Period past due	0	0
Global Corporate Payments [Member] \| 90+ days past due [Member] \| Card Member Receivables [Member]
Financing receivable recorded investment aging
Period past due	$ 144	$ 129

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Amount of financing receivable past due.

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