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Loans and Card Member Receivables - Modifications (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Maximum payment term extension | 60 months |
Unused credit available | $ 28 | $ 14
Account Balances | 1,115 | 807
Card Member Loans | Interest Rate Reduction | Consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 586 | $ 329
% of Total Class of Financing Receivables | 0.60% | 0.40%
Weighted Average Interest Rate Reduction (% points) | 18.00% | 15.30%
Card Member Loans | Interest Rate Reduction | Small Business |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 206 | $ 144
% of Total Class of Financing Receivables | 0.70% | 0.60%
Weighted Average Interest Rate Reduction (% points) | 17.40% | 15.10%
Card Member Loans | Interest Rate Reduction | Corporate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 0 | $ 0
% of Total Class of Financing Receivables | 0.00% | 0.00%
Weighted Average Interest Rate Reduction (% points) | 0.00% | 0.00%
Card Member Receivables | Term Extension | Consumer |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 114 | $ 117
% of Total Class of Financing Receivables | 0.50% | 0.50%
Weighted Average Payment Term Extensions (# of months) | 29 months | 23 months
Card Member Receivables | Term Extension | Small Business |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 174 | $ 199
% of Total Class of Financing Receivables | 0.90% | 1.00%
Weighted Average Payment Term Extensions (# of months) | 29 months | 24 months
Card Member Receivables | Term Extension | Corporate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 6 | $ 7
% of Total Class of Financing Receivables | 0.04% | 0.04%
Weighted Average Payment Term Extensions (# of months) | 9 months | 10 months
Other Loans | Interest Rate Reduction and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 18 | $ 5
% of Total Class of Financing Receivables | 0.20% | 0.10%
Weighted Average Interest Rate Reduction (% points) | 2.30% | 1.90%
Weighted Average Payment Term Extensions (# of months) | 19 months | 18 months
Other Loans | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Account Balances | $ 11 | $ 6
% of Total Class of Financing Receivables | 0.10% | 0.10%
Weighted Average Interest Rate Reduction (% points) | 0.00% | 0.00%
Weighted Average Payment Term Extensions (# of months) | 19 months | 18 months

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- Definition Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A + Details
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