Loans and Accounts Receivable (Details 4) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Impaired loans and receivables
Loans over 90 days past due and accruing interest	$ 392	$ 387
Non-accrual loans	326	279
Loans and receivables modified as a Troubled Debt Restructuring in Program	676	462
Loans and receivables modified as Troubled Debt Restructuring Out of Program	235	198
Total impaired loans and receivables	1,629	1,326
Unpaid principal balance	1,486	1,212
Related allowance for Troubled Debt Restructurings	146	101
Accounts Receivable and Loans Textuals
Total loans and receivables modified as a TDR, past due 90 days and still accruing	21	17
Total loans and receivables modified as a TDR, non-accrual	9	6
Out of Program TDR accounts that completed modification programs	174	148
Out of Program TDR accounts not in compliance with modification programs	61	50
Global Consumer Services Group [Member] \| Card Member Loans [Member]
Impaired loans and receivables
Loans over 90 days past due and accruing interest	347	344
Non-accrual loans	272	236
Loans and receivables modified as a Troubled Debt Restructuring in Program	447	313
Loans and receivables modified as Troubled Debt Restructuring Out of Program	158	131
Total impaired loans and receivables	1,224	1,024
Unpaid principal balance	1,095	923
Related allowance for Troubled Debt Restructurings	118	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	80	69
Unpaid principal balance	67	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	48	29
Loans and receivables modified as Troubled Debt Restructuring Out of Program	14	13
Total impaired loans and receivables	62	42
Unpaid principal balance	62	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	45	43
Non-accrual loans	54	43
Loans and receivables modified as a Troubled Debt Restructuring in Program	86	59
Loans and receivables modified as Troubled Debt Restructuring Out of Program	35	29
Total impaired loans and receivables	220	174
Unpaid principal balance	207	161
Related allowance for Troubled Debt Restructurings	20	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	95	61
Loans and receivables modified as Troubled Debt Restructuring Out of Program	28	25
Total impaired loans and receivables	123	86
Unpaid principal balance	122	86
Related allowance for Troubled Debt Restructurings	$ 5	$ 5

Accounts Receivable and Loans.

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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

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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.

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Out of Program TDRs that have succesfully completed a modification program

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

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

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Amount of financing receivable modified as troubled debt restructuring.

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Amount of financing receivable 90 days or more past due and still accruing.

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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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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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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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