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CREDIT QUALITY AND THE ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis by Credit Quality Indicator (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Total $ 139,304   $ 139,304   $ 139,203
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     14 $ 15  
Year two     27 13  
Year three     25 28  
Year four     77 70  
Year five     61 107  
Prior to year five     140 121  
Within the Revolving Period     91 99  
Converted to Term     0 1  
Total 201 $ 223 435 454  
Commercial          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 5,286   5,286   8,680
Year two 7,344   7,344   4,073
Year three 3,106   3,106   11,674
Year four 10,188   10,188   9,575
Year five 7,774   7,774   3,546
Prior to year five 10,269   10,269   8,223
Within the Revolving Period 27,453   27,453   23,790
Converted to Term 222   222   215
Total 71,642   71,642   69,776
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 0  
Year three     4 2  
Year four     45 30  
Year five     27 86  
Prior to year five     80 71  
Within the Revolving Period     22 13  
Converted to Term     0 0  
Total 93 100 178 202  
Commercial | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 5,273   5,273   8,665
Year two 7,321   7,321   3,830
Year three 2,742   2,742   9,942
Year four 8,105   8,105   8,335
Year five 6,505   6,505   2,814
Prior to year five 7,825   7,825   6,265
Within the Revolving Period 26,295   26,295   22,757
Converted to Term 75   75   70
Total 64,141   64,141   62,678
Commercial | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   3
Year two 7   7   79
Year three 155   155   1,009
Year four 1,167   1,167   598
Year five 683   683   223
Prior to year five 524   524   305
Within the Revolving Period 365   365   291
Converted to Term 6   6   6
Total 2,907   2,907   2,514
Commercial | Substandard Accrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 13   13   12
Year two 16   16   86
Year three 194   194   566
Year four 745   745   522
Year five 495   495   414
Prior to year five 1,305   1,305   1,128
Within the Revolving Period 755   755   706
Converted to Term 132   132   133
Total 3,655   3,655   3,567
Commercial | Nonaccrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   78
Year three 15   15   157
Year four 171   171   120
Year five 91   91   95
Prior to year five 615   615   525
Within the Revolving Period 38   38   36
Converted to Term 9   9   6
Total 939   939   1,017
Commercial | Commercial and industrial          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 3,654   3,654   5,956
Year two 5,124   5,124   2,679
Year three 1,965   1,965   4,567
Year four 3,663   3,663   3,490
Year five 2,367   2,367   1,087
Prior to year five 2,859   2,859   2,422
Within the Revolving Period 25,688   25,688   22,265
Converted to Term 92   92   85
Total 45,412   45,412   42,551
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 0  
Year three     1 1  
Year four     24 11  
Year five     22 0  
Prior to year five     4 3  
Within the Revolving Period     22 13  
Converted to Term     0 0  
Total     73 28  
Commercial | Commercial and industrial | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 3,641   3,641   5,945
Year two 5,104   5,104   2,525
Year three 1,783   1,783   4,194
Year four 3,369   3,369   2,923
Year five 1,901   1,901   895
Prior to year five 2,390   2,390   2,066
Within the Revolving Period 24,635   24,635   21,323
Converted to Term 71   71   66
Total 42,894   42,894   39,937
Commercial | Commercial and industrial | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   2
Year two 7   7   79
Year three 55   55   98
Year four 71   71   236
Year five 226   226   48
Prior to year five 135   135   48
Within the Revolving Period 285   285   211
Converted to Term 0   0   0
Total 779   779   722
Commercial | Commercial and industrial | Substandard Accrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 13   13   9
Year two 13   13   64
Year three 115   115   207
Year four 160   160   269
Year five 209   209   139
Prior to year five 248   248   253
Within the Revolving Period 732   732   697
Converted to Term 16   16   13
Total 1,506   1,506   1,651
Commercial | Commercial and industrial | Nonaccrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   11
Year three 12   12   68
Year four 63   63   62
Year five 31   31   5
Prior to year five 86   86   55
Within the Revolving Period 36   36   34
Converted to Term 5   5   6
Total 233   233   241
Commercial | Commercial real estate          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 1,632   1,632   2,724
Year two 2,220   2,220   1,394
Year three 1,141   1,141   7,107
Year four 6,525   6,525   6,085
Year five 5,407   5,407   2,459
Prior to year five 7,410   7,410   5,801
Within the Revolving Period 1,765   1,765   1,525
Converted to Term 130   130   130
Total 26,230   26,230   27,225
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 0  
Year three     3 1  
Year four     21 19  
Year five     5 86  
Prior to year five     76 68  
Within the Revolving Period     0 0  
Converted to Term     0 0  
Total     105 174  
Commercial | Commercial real estate | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 1,632   1,632   2,720
Year two 2,217   2,217   1,305
Year three 959   959   5,748
Year four 4,736   4,736   5,412
Year five 4,604   4,604   1,919
Prior to year five 5,435   5,435   4,199
Within the Revolving Period 1,660   1,660   1,434
Converted to Term 4   4   4
Total 21,247   21,247   22,741
Commercial | Commercial real estate | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   1
Year two 0   0   0
Year three 100   100   911
Year four 1,096   1,096   362
Year five 457   457   175
Prior to year five 389   389   257
Within the Revolving Period 80   80   80
Converted to Term 6   6   6
Total 2,128   2,128   1,792
Commercial | Commercial real estate | Substandard Accrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   3
Year two 3   3   22
Year three 79   79   359
Year four 585   585   253
Year five 286   286   275
Prior to year five 1,057   1,057   875
Within the Revolving Period 23   23   9
Converted to Term 116   116   120
Total 2,149   2,149   1,916
Commercial | Commercial real estate | Nonaccrual          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   67
Year three 3   3   89
Year four 108   108   58
Year five 60   60   90
Prior to year five 529   529   470
Within the Revolving Period 2   2   2
Converted to Term 4   4   0
Total 706   706   776
Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 2,238   2,238   4,904
Year two 4,698   4,698   4,171
Year three 3,987   3,987   8,885
Year four 8,276   8,276   13,112
Year five 11,698   11,698   7,659
Prior to year five 16,163   16,163   11,367
Within the Revolving Period 19,493   19,493   18,318
Converted to Term 1,109   1,109   1,011
Total 67,662   67,662   69,427
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     14 15  
Year two     27 13  
Year three     21 26  
Year four     32 40  
Year five     34 21  
Prior to year five     60 50  
Within the Revolving Period     69 86  
Converted to Term     0 1  
Total 108 $ 123 257 252  
Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 1,849   1,849   3,459
Year two 3,396   3,396   2,554
Year three 2,641   2,641   5,621
Year four 5,696   5,696   8,318
Year five 8,327   8,327   4,833
Prior to year five 11,914   11,914   7,941
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 33,823   33,823   32,726
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 0  
Year three     0 0  
Year four     0 0  
Year five     0 0  
Prior to year five     1 3  
Within the Revolving Period     0 0  
Converted to Term     0 0  
Total     1 3  
Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   1
Year two 1   1   3
Year three 3   3   15
Year four 7   7   12
Year five 10   10   6
Prior to year five 193   193   336
Within the Revolving Period 16,419   16,419   15,115
Converted to Term 1,078   1,078   1,007
Total 17,711   17,711   16,495
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 0  
Year three     0 0  
Year four     1 0  
Year five     0 0  
Prior to year five     1 2  
Within the Revolving Period     7 5  
Converted to Term     0 1  
Total     9 8  
Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   346
Year three 292   292   1,534
Year four 1,190   1,190   2,041
Year five 1,472   1,472   592
Prior to year five 453   453   231
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 3,407   3,407   4,744
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     0 3  
Year three     3 16  
Year four     14 17  
Year five     12 5  
Prior to year five     5 6  
Within the Revolving Period     0 0  
Converted to Term     0 0  
Total     34 47  
Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 295   295   664
Year two 777   777   942
Year three 833   833   1,533
Year four 1,225   1,225   2,668
Year five 1,842   1,842   2,180
Prior to year five 3,578   3,578   2,825
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 8,550   8,550   10,812
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     0 0  
Year two     2 0  
Year three     4 3  
Year four     10 13  
Year five     18 14  
Prior to year five     48 33  
Within the Revolving Period     0 0  
Converted to Term     0 0  
Total     82 63  
Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 94   94   780
Year two 524   524   326
Year three 218   218   182
Year four 158   158   73
Year five 47   47   48
Prior to year five 25   25   34
Within the Revolving Period 3,074   3,074   3,203
Converted to Term 31   31   4
Total 4,171   4,171   4,650
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]          
Year one     14 15  
Year two     25 10  
Year three     14 7  
Year four     7 10  
Year five     4 2  
Prior to year five     5 6  
Within the Revolving Period     62 81  
Converted to Term     0 0  
Total     131 $ 131  
Greater than 800 | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 660   660   1,644
Year two 2,096   2,096   1,805
Year three 1,782   1,782   4,375
Year four 4,209   4,209   7,310
Year five 6,674   6,674   4,370
Prior to year five 8,717   8,717   5,488
Within the Revolving Period 6,631   6,631   6,146
Converted to Term 183   183   200
Total 30,952   30,952   31,338
Greater than 800 | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 555   555   1,230
Year two 1,681   1,681   1,302
Year three 1,343   1,343   3,299
Year four 3,328   3,328   5,109
Year five 5,103   5,103   2,919
Prior to year five 6,504   6,504   3,869
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 18,514   18,514   17,728
Greater than 800 | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   1
Year two 1   1   0
Year three 0   0   3
Year four 3   3   4
Year five 3   3   1
Prior to year five 72   72   76
Within the Revolving Period 6,130   6,130   5,634
Converted to Term 177   177   200
Total 6,386   6,386   5,919
Greater than 800 | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   65
Year three 57   57   380
Year four 303   303   665
Year five 485   485   183
Prior to year five 131   131   58
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 976   976   1,351
Greater than 800 | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 86   86   227
Year two 279   279   373
Year three 337   337   657
Year four 542   542   1,517
Year five 1,073   1,073   1,256
Prior to year five 2,002   2,002   1,475
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 4,319   4,319   5,505
Greater than 800 | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 19   19   186
Year two 135   135   65
Year three 45   45   36
Year four 33   33   15
Year five 10   10   11
Prior to year five 8   8   10
Within the Revolving Period 501   501   512
Converted to Term 6   6   0
Total 757   757   835
740-799 | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 1,200   1,200   2,306
Year two 1,757   1,757   1,420
Year three 1,245   1,245   2,616
Year four 2,356   2,356   3,618
Year five 3,106   3,106   2,165
Prior to year five 4,219   4,219   2,871
Within the Revolving Period 6,538   6,538   6,170
Converted to Term 220   220   225
Total 20,641   20,641   21,391
740-799 | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 1,031   1,031   1,757
Year two 1,280   1,280   873
Year three 801   801   1,568
Year four 1,566   1,566   2,213
Year five 2,167   2,167   1,338
Prior to year five 3,049   3,049   1,923
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 9,894   9,894   9,672
740-799 | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   1
Year four 1   1   2
Year five 2   2   1
Prior to year five 50   50   65
Within the Revolving Period 5,689   5,689   5,275
Converted to Term 209   209   224
Total 5,951   5,951   5,568
740-799 | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   92
Year three 78   78   430
Year four 324   324   581
Year five 401   401   176
Prior to year five 126   126   61
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 929   929   1,340
740-799 | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 135   135   290
Year two 307   307   359
Year three 302   302   571
Year four 427   427   804
Year five 524   524   637
Prior to year five 987   987   811
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 2,682   2,682   3,472
740-799 | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 34   34   259
Year two 170   170   96
Year three 64   64   46
Year four 38   38   18
Year five 12   12   13
Prior to year five 7   7   11
Within the Revolving Period 849   849   895
Converted to Term 11   11   1
Total 1,185   1,185   1,339
680-739 | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 315   315   736
Year two 618   618   609
Year three 551   551   1,159
Year four 991   991   1,358
Year five 1,168   1,168   723
Prior to year five 1,710   1,710   1,403
Within the Revolving Period 4,046   4,046   3,840
Converted to Term 199   199   184
Total 9,598   9,598   10,012
680-739 | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 233   233   425
Year two 355   355   281
Year three 292   292   552
Year four 528   528   697
Year five 718   718   385
Prior to year five 1,212   1,212   938
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 3,338   3,338   3,278
680-739 | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   1
Year four 1   1   0
Year five 1   1   1
Prior to year five 38   38   76
Within the Revolving Period 3,246   3,246   2,995
Converted to Term 190   190   183
Total 3,476   3,476   3,256
680-739 | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   91
Year three 70   70   338
Year four 248   248   385
Year five 265   265   115
Prior to year five 83   83   45
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 666   666   974
680-739 | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 55   55   110
Year two 138   138   150
Year three 134   134   229
Year four 181   181   261
Year five 174   174   211
Prior to year five 371   371   337
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 1,053   1,053   1,298
680-739 | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 27   27   201
Year two 125   125   87
Year three 55   55   39
Year four 33   33   15
Year five 10   10   11
Prior to year five 6   6   7
Within the Revolving Period 800   800   845
Converted to Term 9   9   1
Total 1,065   1,065   1,206
620-679 | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 37   37   155
Year two 171   171   208
Year three 194   194   401
Year four 366   366   416
Year five 368   368   216
Prior to year five 701   701   697
Within the Revolving Period 1,143   1,143   1,087
Converted to Term 169   169   142
Total 3,149   3,149   3,322
620-679 | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 17   17   31
Year two 68   68   61
Year three 78   78   126
Year four 149   149   151
Year five 169   169   101
Prior to year five 506   506   494
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 987   987   964
620-679 | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   1
Year three 1   1   4
Year four 1   1   3
Year five 2   2   2
Prior to year five 18   18   60
Within the Revolving Period 832   832   752
Converted to Term 165   165   141
Total 1,019   1,019   963
620-679 | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   51
Year three 41   41   189
Year four 143   143   194
Year five 143   143   56
Prior to year five 49   49   29
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 376   376   519
620-679 | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 9   9   27
Year two 42   42   48
Year three 44   44   55
Year four 49   49   58
Year five 47   47   51
Prior to year five 126   126   111
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 317   317   350
620-679 | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 11   11   97
Year two 61   61   47
Year three 30   30   27
Year four 24   24   10
Year five 7   7   6
Prior to year five 2   2   3
Within the Revolving Period 311   311   335
Converted to Term 4   4   1
Total 450   450   526
Less than 620 | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 18   18   52
Year two 55   55   129
Year three 215   215   334
Year four 351   351   409
Year five 381   381   184
Prior to year five 782   782   863
Within the Revolving Period 745   745   693
Converted to Term 338   338   260
Total 2,885   2,885   2,924
Less than 620 | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 13   13   15
Year two 12   12   37
Year three 127   127   76
Year four 122   122   147
Year five 169   169   89
Prior to year five 631   631   703
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 1,074   1,074   1,067
Less than 620 | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   2
Year three 2   2   6
Year four 1   1   3
Year five 2   2   1
Prior to year five 15   15   59
Within the Revolving Period 517   517   459
Converted to Term 337   337   259
Total 874   874   789
Less than 620 | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   47
Year three 46   46   197
Year four 172   172   216
Year five 178   178   62
Prior to year five 64   64   38
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 460   460   560
Less than 620 | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 2   2   5
Year two 11   11   12
Year three 16   16   21
Year four 26   26   28
Year five 24   24   25
Prior to year five 70   70   60
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 149   149   151
Less than 620 | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 3   3   32
Year two 32   32   31
Year three 24   24   34
Year four 30   30   15
Year five 8   8   7
Prior to year five 2   2   3
Within the Revolving Period 228   228   234
Converted to Term 1   1   1
Total 328   328   357
No FICO available | Retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 8   8   11
Year two 1   1   0
Year three 0   0   0
Year four 3   3   1
Year five 1   1   1
Prior to year five 34   34   45
Within the Revolving Period 390   390   382
Converted to Term 0   0   0
Total 437   437   440
No FICO available | Retail | Residential mortgages          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   1
Year two 0   0   0
Year three 0   0   0
Year four 3   3   1
Year five 1   1   1
Prior to year five 12   12   14
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 16   16   17
No FICO available | Retail | Home equity          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior to year five 0   0   0
Within the Revolving Period 5   5   0
Converted to Term 0   0   0
Total 5   5   0
No FICO available | Retail | Automobile          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   0
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior to year five 0   0   0
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 0   0   0
No FICO available | Retail | Education          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 8   8   5
Year two 0   0   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior to year five 22   22   31
Within the Revolving Period 0   0   0
Converted to Term 0   0   0
Total 30   30   36
No FICO available | Retail | Other retail          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Year one 0   0   5
Year two 1   1   0
Year three 0   0   0
Year four 0   0   0
Year five 0   0   0
Prior to year five 0   0   0
Within the Revolving Period 385   385   382
Converted to Term 0   0   0
Total $ 386   $ 386   $ 387