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Loans - 90+ Day Delinquent Loans Accruing Interest and Nonperforming Loans (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | $ 3,502 |  | $ 3,554
Nonperforming Loans | 1,783 |  | 1,528
Nonperforming Loans Without an Allowance | $ 737 |  | $ 547
Percentage, 90 Days Past Due and Accruing | 1.11% |  | 1.11%
Percentage, Nonperforming Loans | 0.57% |  | 0.48%
Percentage, Nonperforming Loans Without an Allowance | 0.23% |  | 0.17%
Interest income for loans classified as nonperforming | $ 5 | $ 2 |
Credit Card: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 3,479 |  | $ 3,499
Nonperforming Loans | 9 |  | 9
Nonperforming Loans Without an Allowance | 0 |  | 0
Credit Card: | Domestic credit card: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 3,339 |  | 3,367
Nonperforming Loans Without an Allowance | 0 |  | 0
Credit Card: | International card businesses: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 140 |  | 132
Nonperforming Loans | 9 |  | 9
Nonperforming Loans Without an Allowance | 0 |  | 0
Consumer Banking: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 0 |  | 0
Nonperforming Loans | 626 |  | 758
Nonperforming Loans Without an Allowance | 21 |  | 19
Consumer Banking: | Auto |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 0 |  | 0
Nonperforming Loans | 585 |  | 712
Nonperforming Loans Without an Allowance | 0 |  | 0
Consumer Banking: | Retail banking |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 0 |  | 0
Nonperforming Loans | 41 |  | 46
Nonperforming Loans Without an Allowance | 21 |  | 19
Commercial Banking: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 23 |  | 55
Nonperforming Loans | 1,148 |  | 761
Nonperforming Loans Without an Allowance | 716 |  | 528
Commercial Banking: | Commercial and multifamily real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 5 |  | 0
Nonperforming Loans | 541 |  | 425
Nonperforming Loans Without an Allowance | 369 |  | 335
Commercial Banking: | Commercial and industrial |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
> 90 Days and Accruing | 18 |  | 55
Nonperforming Loans | 607 |  | 336
Nonperforming Loans Without an Allowance | $ 347 |  | $ 193

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