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Variable Interest Entities and Asset Securitizations - Schedule of Carrying Amount of Investments In Tax Equity Partnerships and Related Future Funding Commitments (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Accrued Interest and Other Assets [Member] | Affordable Housing Projects [member] |  |  |
Investments in affordable housing projects: |  |  |
Carrying amount | [1] | $ 1,323 | $ 1,340
Accrued Interest and Other Assets [Member] | Renewable Energy [Member] |  |  |
Investments in affordable housing projects: |  |  |
Carrying amount | [1] | 79 | 80
Accrued Interest and Other Assets [Member] | Other [Member] |  |  |
Investments in affordable housing projects: |  |  |
Carrying amount | [1] | 40 | 41
Accrued Interest and Other Liabilities [Member] | Affordable Housing Projects [member] |  |  |
Investments in affordable housing projects: |  |  |
Amount of future funding commitments included in carrying amount | [2] | 379 | 410
Contingent commitments |  | 55 | 55
Accrued Interest and Other Liabilities [Member] | Renewable Energy [Member] |  |  |
Investments in affordable housing projects: |  |  |
Amount of future funding commitments included in carrying amount | [2] | $ 49 | $ 31
[1] | Included in "accrued interest and other assets" in the Consolidated Balance Sheet
[2] | Included in "accrued interest and other liabilities" in the Consolidated Balance Sheet.

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- Definition Contingent Commitments to Provide Additional Capital Contributions to Partnerships + References No definition available. + Details
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