Loans and Accounts Receivable (Details 4) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Impaired loans and receivables
Loans over 90 days past due and accruing interest	$ 391	$ 387
Non-accrual loans	299	279
Loans and receivables modified as a Troubled Debt Restructuring in Program	526	462
Loans and receivables modified as Troubled Debt Restructuring Out of Program	207	198
Total impaired loans and receivables	1,423	1,326
Unpaid principal balance	1,292	1,212
Related allowance for Troubled Debt Restructurings	115	101
Accounts Receivable and Loans Textuals [Abstract]
Total loans and receivables modified as a TDR, non-accrual	12	6
Total loans and receivables modified as a TDR, past due 90 days and still accruing	20	17
Out of Program TDR accounts that completed modification programs	156	148
Out of Program TDR accounts not in compliance with modification programs	51	50
Global Consumer Services Group [Member] \| Card Member Loans [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	348	344
Non-accrual loans	250	236
Loans and receivables modified as a Troubled Debt Restructuring in Program	354	313
Loans and receivables modified as Troubled Debt Restructuring Out of Program	137	131
Total impaired loans and receivables	1,089	1,024
Unpaid principal balance	972	923
Related allowance for Troubled Debt Restructurings	93	80
Global Consumer Services Group [Member] \| Card Member Loans [Member] \| Non Us [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	77	69
Unpaid principal balance	64	68
Global Consumer Services Group [Member] \| Card Member Receivables [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	0	0
Non-accrual loans	0	0
Loans and receivables modified as a Troubled Debt Restructuring in Program	35	29
Loans and receivables modified as Troubled Debt Restructuring Out of Program	12	13
Total impaired loans and receivables	47	42
Unpaid principal balance	47	42
Related allowance for Troubled Debt Restructurings	3	2
Global Commercial Services [Member] \| Card Member Loans [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	43	43
Non-accrual loans	49	43
Loans and receivables modified as a Troubled Debt Restructuring in Program	67	59
Loans and receivables modified as Troubled Debt Restructuring Out of Program	30	29
Total impaired loans and receivables	189	174
Unpaid principal balance	176	161
Related allowance for Troubled Debt Restructurings	15	14
Global Commercial Services [Member] \| Card Member Receivables [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	0	0
Non-accrual loans	0	0
Loans and receivables modified as a Troubled Debt Restructuring in Program	70	61
Loans and receivables modified as Troubled Debt Restructuring Out of Program	28	25
Total impaired loans and receivables	98	86
Unpaid principal balance	97	86
Related allowance for Troubled Debt Restructurings	$ 4	$ 5

Accounts Receivable and Loans.

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- Definition

Recorded investment in financing receivables that have been modified in a Troubled Debt Restructuring and are on nonaccrual status as of the balance sheet date.

+ References

No definition available.

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Recorded investment in financing receivables that have been modified in a Troubled Debt Restructuring and are 90 days or more past due and still accruing interest.

+ References

No definition available.

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- Definition

Out of Program TDRs that have succesfully completed a modification program

+ References

No definition available.

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Out of Program TDRs accounts that were not in compliance with the terms of modification programs

+ References

No definition available.

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Loans and receivables modified as a Troubled Debt Restructuring Out of Program

+ References

No definition available.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Amount of allowance for credit losses related to recorded investment.

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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-Publisher FASB
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- References

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Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

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