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MORTGAGE BANKING AND OTHER - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 123,318	$ 123,090
Mortgage loans serviced for others | Banking Subsidiaries
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 87,400	$ 81,200

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No definition available.

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- Definition

Amount, before allowance for credit loss, of financing receivable.

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