BORROWINGS (Bank) (Narrative) (Details) $ in Millions	Jun. 30, 2019 USD ($)
Real estate investment trust
Debt Instrument [Line Items]
Debt repurchased	$ 126.4
Bank | Federal home loan bank advances
Debt Instrument [Line Items]
Debt repurchased	1,000.0
Bank | Real estate investment trust (REIT) preferred
Debt Instrument [Line Items]
Debt repurchased	21.2
Bank | Subordinated term loan, due August 2022
Debt Instrument [Line Items]
Debt repurchased	$ 27.9