MORTGAGE BANKING AND OTHER SERVICED LOANS - Residential Mortgage Loans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cash proceeds from residential mortgage loans sold with servicing retained	$ 9,400	$ 7,306	$ 9,124
Mortgage Banking Fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain on sales	77	63	72
Contractually specified servicing, late and other ancillary fees	$ 279	$ 309	$ 309

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.

+ References

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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