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Loans - Consumer Banking Portfolio by Credit Quality Indicator (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | $ 312,331 | $ 277,340
Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 31,969 | 38,021
Term loans by vintage year two | 25,937 | 18,865
Term loans by vintage year three | 11,591 | 10,789
Term loans by vintage year four | 6,039 | 5,487
Term loans by vintage year five | 2,589 | 2,816
Term loans by vintage after year five | 1,372 | 1,287
Total term loans | 79,497 | 77,265
Revolving loans | 422 | 373
Revolving loans converted to term | 6 | 8
Total | 79,925 | 77,646
Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 31,801 | 37,736
Term loans by vintage year two | 25,807 | 18,687
Term loans by vintage year three | 11,509 | 10,615
Term loans by vintage year four | 5,906 | 5,318
Term loans by vintage year five | 2,459 | 2,639
Term loans by vintage after year five | 891 | 784
Total term loans | 78,373 | 75,779
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 78,373 | 75,779
Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 168 | 285
Term loans by vintage year two | 130 | 178
Term loans by vintage year three | 82 | 174
Term loans by vintage year four | 133 | 169
Term loans by vintage year five | 130 | 177
Term loans by vintage after year five | 481 | 503
Total term loans | 1,124 | 1,486
Revolving loans | 422 | 373
Revolving loans converted to term | 6 | 8
Total | 1,552 | 1,867
Current | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 166 | 285
Term loans by vintage year two | 128 | 171
Term loans by vintage year three | 82 | 172
Term loans by vintage year four | 133 | 161
Term loans by vintage year five | 127 | 176
Term loans by vintage after year five | 470 | 491
Total term loans | 1,106 | 1,456
Revolving loans | 408 | 345
Revolving loans converted to term | 4 | 6
Total | 1,518 | 1,807
30-59 days | Retail banking | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 2 | 0
Term loans by vintage year two | 1 | 2
Term loans by vintage year three | 0 | 2
Term loans by vintage year four | 0 | 7
Term loans by vintage year five | 0 | 0
Term loans by vintage after year five | 2 | 1
Total term loans | 5 | 12
Revolving loans | 8 | 23
Revolving loans converted to term | 0 | 0
Total | 13 | 35
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 | 1 | 4
Term loans by vintage year three | 0 | 0
Term loans by vintage year four | 0 | 0
Term loans by vintage year five | 0 | 0
Term loans by vintage after year five | 1 | 2
Total term loans | 2 | 6
Revolving loans | 2 | 1
Revolving loans converted to term | 0 | 0
Total | 4 | 7
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 | 0 | 1
Term loans by vintage year three | 0 | 0
Term loans by vintage year four | 0 | 1
Term loans by vintage year five | 3 | 1
Term loans by vintage after year five | 8 | 9
Total term loans | 11 | 12
Revolving loans | 4 | 4
Revolving loans converted to term | 2 | 2
Total | 17 | 18
Greater than 660 | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 17,872 | 20,758
Term loans by vintage year two | 14,246 | 8,630
Term loans by vintage year three | 5,354 | 4,739
Term loans by vintage year four | 2,595 | 2,394
Term loans by vintage year five | 1,032 | 1,153
Term loans by vintage after year five | 328 | 301
Total term loans | 41,427 | 37,975
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 41,427 | 37,975
621-660 | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 6,212 | 7,456
Term loans by vintage year two | 5,060 | 3,721
Term loans by vintage year three | 2,257 | 2,109
Term loans by vintage year four | 1,167 | 1,084
Term loans by vintage year five | 513 | 537
Term loans by vintage after year five | 185 | 157
Total term loans | 15,394 | 15,064
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 15,394 | 15,064
620 or below | Auto | Consumer Banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Term loans by vintage year one | 7,717 | 9,522
Term loans by vintage year two | 6,501 | 6,336
Term loans by vintage year three | 3,898 | 3,767
Term loans by vintage year four | 2,144 | 1,840
Term loans by vintage year five | 914 | 949
Term loans by vintage after year five | 378 | 326
Total term loans | 21,552 | 22,740
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total | $ 21,552 | $ 22,740

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