v3.26.3
Loan Receivables and Allowance for Credit Losses - Performance of Loans Modified to Borrowers Experiencing Financial Difficulty (Details)
$ in Millions
 9 Months Ended
Sep. 30, 2026
USD ($)
payment
Sep. 30, 2025
USD ($)
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 loans modified $ 956 $ 1,033
% of Total Class of Loan Receivables 0.90% 1.00%
Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified $ 297 $ 341
% of Total Class of Loan Receivables 0.30% 0.30%
Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified $ 171 $ 191
% 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 loans modified $ 126 $ 150
% of Total Class of Loan Receivables 0.10% 0.10%
Credit cards | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified $ 890 $ 972
Credit cards | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 232 271
Credit cards | Long-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 138 160
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 loans modified 94 111
Credit cards | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 58 56
Credit cards | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 62 68
Credit cards | Short-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 31 30
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 loans modified 31 38
Consumer installment loans | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 0 0
Consumer installment loans | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 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 loans modified 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 loans modified 0 0
Consumer installment loans | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 0 0
Consumer installment loans | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 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 loans modified 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 loans modified 0 0
Commercial credit products | Long-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 8 5
Commercial credit products | Long-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 3 2
Commercial credit products | Long-term Payment Deferral | Financing Receivables, 30 to 89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 2 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 loans modified 1 1
Commercial credit products | Short-term Payment Deferral | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 0 0
Commercial credit products | Short-term Payment Deferral | Financial Asset, Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total loans modified 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 loans modified 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 loans modified $ 0 $ 0