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Loans - Consumer Banking Portfolio by Credit Quality Indicator (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | $ 277,340 | $ 251,624
Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 38,021 | 29,724
Term loans by vintage year two | 18,865 | 18,253
Term loans by vintage year three | 10,789 | 10,209
Term loans by vintage year four | 5,487 | 6,191
Term loans by vintage year five | 2,816 | 2,717
Term loans by vintage after year five | 1,287 | 1,102
Total term loans | 77,265 | 68,196
Revolving loans | 373 | 683
Revolving loans converted to term | 8 | 9
Total | 77,646 | 68,888
Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 37,736 | 28,683
Term loans by vintage year two | 18,687 | 18,020
Term loans by vintage year three | 10,615 | 9,995
Term loans by vintage year four | 5,318 | 5,967
Term loans by vintage year five | 2,639 | 2,542
Term loans by vintage after year five | 784 | 555
Total term loans | 75,779 | 65,762
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 75,779 | 65,762
Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 285 | 1,041
Term loans by vintage year two | 178 | 233
Term loans by vintage year three | 174 | 214
Term loans by vintage year four | 169 | 224
Term loans by vintage year five | 177 | 175
Term loans by vintage after year five | 503 | 547
Total term loans | 1,486 | 2,434
Revolving loans | 373 | 683
Revolving loans converted to term | 8 | 9
Total | 1,867 | 3,126
PPP loans | 232 | 919
Current | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 285 | 1,041
Term loans by vintage year two | 171 | 233
Term loans by vintage year three | 172 | 206
Term loans by vintage year four | 161 | 222
Term loans by vintage year five | 176 | 167
Term loans by vintage after year five | 491 | 537
Total term loans | 1,456 | 2,406
Revolving loans | 345 | 651
Revolving loans converted to term | 6 | 7
Total | 1,807 | 3,064
30-59 days | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 0 | 0
Term loans by vintage year two | 2 | 0
Term loans by vintage year three | 2 | 7
Term loans by vintage year four | 7 | 1
Term loans by vintage year five | 0 | 2
Term loans by vintage after year five | 1 | 2
Total term loans | 12 | 12
Revolving loans | 23 | 15
Revolving loans converted to term | 0 | 1
Total | 35 | 28
60-89 days | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 0 | 0
Term loans by vintage year two | 4 | 0
Term loans by vintage year three | 0 | 1
Term loans by vintage year four | 0 | 0
Term loans by vintage year five | 0 | 5
Term loans by vintage after year five | 2 | 4
Total term loans | 6 | 10
Revolving loans | 1 | 8
Revolving loans converted to term | 0 | 1
Total | 7 | 19
Greater than 90 days | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 0 | 0
Term loans by vintage year two | 1 | 0
Term loans by vintage year three | 0 | 0
Term loans by vintage year four | 1 | 1
Term loans by vintage year five | 1 | 1
Term loans by vintage after year five | 9 | 4
Total term loans | 12 | 6
Revolving loans | 4 | 9
Revolving loans converted to term | 2 | 0
Total | 18 | 15
Greater than 660 | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 20,758 | 13,352
Term loans by vintage year two | 8,630 | 8,091
Term loans by vintage year three | 4,739 | 4,675
Term loans by vintage year four | 2,394 | 2,810
Term loans by vintage year five | 1,153 | 1,168
Term loans by vintage after year five | 301 | 203
Total term loans | 37,975 | 30,299
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 37,975 | 30,299
621-660 | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 7,456 | 5,781
Term loans by vintage year two | 3,721 | 3,631
Term loans by vintage year three | 2,109 | 2,003
Term loans by vintage year four | 1,084 | 1,172
Term loans by vintage year five | 537 | 488
Term loans by vintage after year five | 157 | 109
Total term loans | 15,064 | 13,184
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 15,064 | 13,184
620 or below | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 9,522 | 9,550
Term loans by vintage year two | 6,336 | 6,298
Term loans by vintage year three | 3,767 | 3,317
Term loans by vintage year four | 1,840 | 1,985
Term loans by vintage year five | 949 | 886
Term loans by vintage after year five | 326 | 243
Total term loans | 22,740 | 22,279
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | $ 22,740 | $ 22,279

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