LOAN SERVICING RIGHTS (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Commercial FHA Mortgage Loans
MORTGAGE SERVICING RIGHTS
Principal balances of loans serviced for others	$ 4,010.0	$ 4,080.0
Residential mortgage loans
MORTGAGE SERVICING RIGHTS
Principal balances of loans serviced for others	$ 365.5	$ 381.6

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