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Loans - 90+ Day Delinquent Loans Accruing Interest and Nonperforming Loans (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | $ 1,294 |  | $ 1,195
Nonperforming Loans | 1,073 |  | 1,100
Nonperforming Loans Without an Allowance | $ 456 |  | $ 529
Percentage, 90 Days Past Due and Accruing | 0.46% |  | 0.43%
Percentage, Nonperforming Loans | 0.38% |  | 0.40%
Percentage, Nonperforming Loans Without an Allowance | 0.16% |  | 0.19%
Interest income for loans classified as nonperforming | $ 1 | $ 1 |
Credit Card |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 1,282 |  | $ 1,192
Nonperforming Loans | 8 |  | 10
Nonperforming Loans Without an Allowance | 0 |  | 0
Credit Card | Domestic credit card: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 1,191 |  | 1,110
Nonperforming Loans Without an Allowance | 0 |  | 0
Credit Card | International card businesses: |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 91 |  | 82
Nonperforming Loans | 8 |  | 10
Nonperforming Loans Without an Allowance | 0 |  | 0
Consumer Banking |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 0 |  | 0
Nonperforming Loans | 370 |  | 391
Nonperforming Loans Without an Allowance | 0 |  | 4
Consumer Banking | Auto |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 0 |  | 0
Nonperforming Loans | 325 |  | 344
Nonperforming Loans Without an Allowance | 0 |  | 0
Consumer Banking | Retail banking |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 0 |  | 0
Nonperforming Loans | 45 |  | 47
Nonperforming Loans Without an Allowance | 0 |  | 4
Commercial Banking |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 12 |  | 3
Nonperforming Loans | 695 |  | 699
Nonperforming Loans Without an Allowance | 456 |  | 525
Commercial Banking | Commercial And Industrial [Member] |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 0 |  | 0
Nonperforming Loans | 360 |  | 316
Nonperforming Loans Without an Allowance | 235 |  | 257
Commercial Banking | Commercial and multifamily real estate |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
90 Days Past Due and Accruing | 12 |  | 3
Nonperforming Loans | 335 |  | 383
Nonperforming Loans Without an Allowance | $ 221 |  | $ 268

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