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LOANS AND LEASES - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest receivable | $ 820 | $ 450 |
Net loans and leases | 154,679 | 126,405 |
Interest income on direct financing and sales-type leases | 46 | 49 | $ 64
Retail | Residential mortgages | Pledged as collateral for FHLB borrowing capacity |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Net loans and leases | 38,400 | 26,100 |
Retail and Commercial | Auto, commercial and commercial real estate loans | Notes Payable, Other Payables |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Net loans and leases | $ 34,800 | $ 35,800 |
Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Term of contract | 3 years |  |
Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Term of contract | 10 years |  |

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