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Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Assets: |  |  |
Fair Value | $ 79,117 | $ 76,919 |
Loans held for sale | $ 347 | $ 191 |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Other assets | Other assets |
Other assets: |  |  |
Derivative assets, gross amount | $ 2,675 | $ 3,098 |
Derivative Asset, netting adjustments | (1,005) | (1,134) |
Derivative asset | 1,670 | 1,964 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 2,932 | 4,550 |
Derivative Liability, netting adjustments | (597) | (1,235) |
Derivative liability | $ 2,335 | $ 3,315 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities |
Net valuation allowance | $ 2 | $ 4 |
Level 1 |  |  |
Assets: |  |  |
Loans held for sale | 0 | 0 |
Level 2 |  |  |
Assets: |  |  |
Loans held for sale | 515 | 11 |
Level 3 |  |  |
Assets: |  |  |
Loans held for sale | 0 | 0 |
Recurring |  |  |
Assets: |  |  |
Fair Value | 79,117 | 76,919 |
Loans held for sale | 347 | 191 |
Other assets: |  |  |
Derivative asset | 1,670 | 1,964 |
Other | 627 | 503 |
Total | 81,761 | 79,577 |
Liabilities: |  |  |
Derivative liability | 2,335 | 3,315 |
Recurring | Level 1 |  |  |
Assets: |  |  |
Fair Value | 5,408 | 5,227 |
Loans held for sale | 0 | 0 |
Other assets: |  |  |
Derivative assets, gross amount | 788 | 474 |
Other | 589 | 464 |
Total | 6,785 | 6,165 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 449 | 823 |
Deferred compensation plan assets | 578 | 453 |
Recurring | Level 2 |  |  |
Assets: |  |  |
Fair Value | 73,431 | 71,314 |
Loans held for sale | 347 | 191 |
Other assets: |  |  |
Derivative assets, gross amount | 1,001 | 2,545 |
Other | 3 | 3 |
Total | 74,782 | 74,053 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 1,655 | 3,653 |
Recurring | Level 3 |  |  |
Assets: |  |  |
Fair Value | 278 | 378 |
Loans held for sale | 0 | 0 |
Other assets: |  |  |
Derivative assets, gross amount | 886 | 79 | $ 84
Other | 35 | 36 |
Total | 1,199 | 493 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 828 | 74 | $ 65
Retained interests in securitizations | 35 | 36 |
Recurring | Fair Value Inputs Level 1 And Level 2 |  |  |
Liabilities: |  |  |
Equity securities | 14 | 14 |
Debt and equity securities, unrealized gain (loss) | 5 | (23) |
U.S. Treasury securities |  |  |
Assets: |  |  |
Fair Value | 5,282 | 5,041 |
U.S. Treasury securities | Recurring |  |  |
Assets: |  |  |
Fair Value | 5,282 | 5,041 |
U.S. Treasury securities | Recurring | Level 1 |  |  |
Assets: |  |  |
Fair Value | 5,282 | 5,041 |
U.S. Treasury securities | Recurring | Level 2 |  |  |
Assets: |  |  |
Fair Value | 0 | 0 |
U.S. Treasury securities | Recurring | Level 3 |  |  |
Assets: |  |  |
Fair Value | 0 | 0 |
Total RMBS |  |  |
Assets: |  |  |
Fair Value | 63,638 | 62,589 |
Total RMBS | Recurring |  |  |
Assets: |  |  |
Fair Value | 63,638 | 62,589 |
Total RMBS | Recurring | Level 1 |  |  |
Assets: |  |  |
Fair Value | 0 | 0 |
Total RMBS | Recurring | Level 2 |  |  |
Assets: |  |  |
Fair Value | 63,492 | 62,353 |
Total RMBS | Recurring | Level 3 |  |  |
Assets: |  |  |
Fair Value | 146 | 236 |
CMBS | Recurring |  |  |
Assets: |  |  |
Fair Value | 8,323 | 7,870 |
CMBS | Recurring | Level 1 |  |  |
Assets: |  |  |
Fair Value | 0 | 0 |
CMBS | Recurring | Level 2 |  |  |
Assets: |  |  |
Fair Value | 8,191 | 7,728 |
CMBS | Recurring | Level 3 |  |  |
Assets: |  |  |
Fair Value | 132 | 142 |
Other securities |  |  |
Assets: |  |  |
Fair Value | 1,874 | 1,419 |
Other securities | Recurring |  |  |
Assets: |  |  |
Fair Value | 1,874 | 1,419 |
Other securities | Recurring | Level 1 |  |  |
Assets: |  |  |
Fair Value | 126 | 186 |
Other securities | Recurring | Level 2 |  |  |
Assets: |  |  |
Fair Value | 1,748 | 1,233 |
Other securities | Recurring | Level 3 |  |  |
Assets: |  |  |
Fair Value | $ 0 | $ 0 |

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