v3.25.2
Loan Receivables and Allowance for Credit Losses - Performance of Loans Modified to Borrowers Experiencing Financial Difficulty (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2025
USD ($)
payment
Jun. 30, 2024
USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loan return to current status, number of consecutive monthly program payments received | payment 3  
Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 1,057 $ 1,063
% of Total Class of Loan Receivables 1.10% 1.00%
Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 335 $ 373
% of Total Class of Loan Receivables 0.30% 0.40%
Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 179 $ 194
% of Total Class of Loan Receivables 0.20% 0.20%
Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 156 $ 179
% of Total Class of Loan Receivables 0.20% 0.20%
Credit cards | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 997 $ 993
Credit cards | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 265 290
Credit cards | Long-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 148 157
Credit cards | Long-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 117 133
Credit cards | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 56 67
Credit cards | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 68 81
Credit cards | Short-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 30 36
Credit cards | Short-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 38 45
Consumer installment loans | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Long-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Long-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Short-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Consumer installment loans | Short-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Commercial credit products | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 4 3
Commercial credit products | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 2 2
Commercial credit products | Long-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 1 1
Commercial credit products | Long-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 1 1
Commercial credit products | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Commercial credit products | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Commercial credit products | Short-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans 0 0
Commercial credit products | Short-term Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total delinquent modified loans $ 0 $ 0