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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | $ 76,919 | $ 95,261 |
Loans Held-for-sale, Fair Value Disclosure | 191 | 1,000 |
Derivative assets, gross amount | 3,098 | 2,690 |
Derivative asset, netting adjustments | (1,134) | (542) |
Derivative asset | $ 1,964 | 2,148 |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other liabilities |  |
Liabilities: |  |  |
Derivative liabilities, gross amount | $ 4,550 | 1,868 |
Derivative liability, netting adjustments | (1,235) | (544) |
Derivative liability | 3,315 | 1,324 |
Net valuation allowance | 4 | 11 |
Level 1 |  |  |
Assets: |  |  |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0 |
Level 2 |  |  |
Assets: |  |  |
Loans Held-for-sale, Fair Value Disclosure | 11 | 5,091 |
Level 3 |  |  |
Assets: |  |  |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0 |
Recurring |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 76,919 | 95,261 |
Loans Held-for-sale, Fair Value Disclosure | 191 | 1,026 |
Derivative asset | 1,964 | 2,148 |
Other assets | 503 | 573 |
Total assets | 79,577 | 99,008 |
Liabilities: |  |  |
Derivative liability | 3,315 | 1,324 |
Recurring | Level 1 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 5,227 | 9,648 |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0 |
Derivative assets, gross amount | 474 | 406 |
Other assets | 464 | 526 |
Total assets | 6,165 | 10,580 |
Other assets: |  |  |
Deferred compensation plan assets | 453 | 490 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 823 | 838 |
Recurring | Level 2 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 71,314 | 85,346 |
Loans Held-for-sale, Fair Value Disclosure | 191 | 1,026 |
Derivative assets, gross amount | 2,545 | 2,200 |
Other assets | 3 | 6 |
Total assets | 74,053 | 88,578 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 3,653 | 965 |
Recurring | Level 3 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 378 | 267 |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0 |
Derivative assets, gross amount | 79 | 84 | $ 141
Other assets | 36 | 41 |
Total assets | 493 | 392 |
Other assets: |  |  |
Retained interests in securitizations | 36 | 41 |
Liabilities: |  |  |
Derivative liabilities, gross amount | 74 | 65 | $ 110
Recurring | Fair Value Inputs Level 1 And Level 2 [Member] |  |  |
Other assets: |  |  |
Equity securities | 14 | 42 |
Liabilities: |  |  |
Debt and Equity Securities, Unrealized Gain (Loss) | (23) | (36) |
U.S. Treasury securities |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 5,041 | 9,442 |
U.S. Treasury securities | Recurring |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 5,041 | 9,442 |
U.S. Treasury securities | Recurring | Level 1 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 5,041 | 9,442 |
U.S. Treasury securities | Recurring | Level 2 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 0 | 0 |
U.S. Treasury securities | Recurring | Level 3 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 0 | 0 |
RMBS |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 62,589 | 73,616 |
RMBS | Recurring |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 62,589 | 73,616 |
RMBS | Recurring | Level 1 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 0 | 0 |
RMBS | Recurring | Level 2 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 62,353 | 73,358 |
RMBS | Recurring | Level 3 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 236 | 258 |
CMBS | Recurring |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 7,870 | 9,369 |
CMBS | Recurring | Level 1 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 0 | 0 |
CMBS | Recurring | Level 2 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 7,728 | 9,360 |
CMBS | Recurring | Level 3 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 142 | 9 |
Other securities |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 1,419 | 2,834 |
Other securities | Recurring |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 1,419 | 2,834 |
Other securities | Recurring | Level 1 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 186 | 206 |
Other securities | Recurring | Level 2 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | 1,233 | 2,628 |
Other securities | Recurring | Level 3 |  |  |
Assets: |  |  |
Securities available for sale (amortized cost of $87.0 billion and $94.9 billion and allowance for credit losses of $3 million and $1 million as of December 31, 2022 and 2021, respectively) | $ 0 | $ 0 |

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