v3.26.1
Loans - Credit Card Delinquency Status (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 447,754 $ 453,622
Term loan by year, year 1 3  
Term loan by year, year 2 231  
Term loan by year, year 3 238  
Term loan by year, year 4 160  
Term loan by year, year 5 127  
Prior 139  
Total Term Loans 898  
Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 270,558 279,570
Term loan by year, year 1 0  
Term loan by year, year 2 24  
Term loan by year, year 3 41  
Term loan by year, year 4 35  
Term loan by year, year 5 15  
Prior 6  
Total Term Loans 121  
Personal loans—Delinquency status:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 0 0
Revolving Loans Converted to Term 0 0
Total 9,070 9,499
Term loan by year, year 1 922 4,077
Term loan by year, year 2 3,623 2,782
Term loan by year, year 3 2,375 1,669
Term loan by year, year 4 1,378 684
Term loan by year, year 5 553 216
Prior 219 71
Total Term Loans 9,070 9,499
Domestic credit card: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 252,026 260,506
Revolving Loans Converted to Term 2,002 1,897
Total 254,028 262,403
International card businesses: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 7,402 7,610
Revolving Loans Converted to Term 58 58
Total 7,460 7,668
Current | Personal loans—Delinquency status:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 0 0
Revolving Loans Converted to Term 0 0
Total 8,906 9,325
Term loan by year, year 1 921 4,050
Term loan by year, year 2 3,586 2,727
Term loan by year, year 3 2,323 1,614
Term loan by year, year 4 1,334 658
Term loan by year, year 5 532 208
Prior 210 68
Total Term Loans 8,906 9,325
Current | Domestic credit card: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 242,915 250,332
Revolving Loans Converted to Term 1,718 1,600
Total 244,633 251,932
Current | International card businesses: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 7,046 7,260
Revolving Loans Converted to Term 45 44
Total 7,091 7,304
30-59 days | Personal loans—Delinquency status:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 0 0
Revolving Loans Converted to Term 0 0
Total 68 72
Term loan by year, year 1 1 14
Term loan by year, year 2 16 22
Term loan by year, year 3 22 22
Term loan by year, year 4 18 10
Term loan by year, year 5 8 3
Prior 3 1
Total Term Loans 68 72
30-59 days | Domestic credit card: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 2,529 2,925
Revolving Loans Converted to Term 88 90
Total 2,617 3,015
30-59 days | International card businesses: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 113 112
Revolving Loans Converted to Term 5 5
Total 118 117
60-89 days | Personal loans—Delinquency status:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 0 0
Revolving Loans Converted to Term 0 0
Total 49 53
Term loan by year, year 1 0 8
Term loan by year, year 2 12 17
Term loan by year, year 3 16 16
Term loan by year, year 4 12 8
Term loan by year, year 5 6 3
Prior 3 1
Total Term Loans 49 53
60-89 days | Domestic credit card: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 1,951 2,233
Revolving Loans Converted to Term 70 75
Total 2,021 2,308
60-89 days | International card businesses: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 81 80
Revolving Loans Converted to Term 3 3
Total 84 83
Greater than 90 days | Personal loans—Delinquency status:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 0 0
Revolving Loans Converted to Term 0 0
Total 47 49
Term loan by year, year 1 0 5
Term loan by year, year 2 9 16
Term loan by year, year 3 14 17
Term loan by year, year 4 14 8
Term loan by year, year 5 7 2
Prior 3 1
Total Term Loans 47 49
Greater than 90 days | Domestic credit card: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 4,631 5,016
Revolving Loans Converted to Term 126 132
Total 4,757 5,148
Greater than 90 days | International card businesses: | Credit Card:    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Revolving Loans 162 158
Revolving Loans Converted to Term 5 6
Total $ 167 $ 164