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Certain Relationships and Related Transactions (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Related Party Transaction [Line Items] |  |
Tax credit investments and investments in non-consolidated entities | $ 696 | $ 160
CIT Group Inc. | CIT Northbridge Credit LLC |  |
Related Party Transaction [Line Items] |  |
Equity method investment, ownership percentage | 20.00% |
Equity method investments | $ 33 |
Allstate Insurance Company and Subsidiary | CIT Northbridge Credit LLC |  |
Related Party Transaction [Line Items] |  |
Noncontrolling interest, ownership percentage by parent | 80.00% |

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- Details
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