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RESTRICTIONS ON CASH AND DIVIDENDS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Restrictions on Subsidiary Dividends, Loans or Advances [Line Items]    
Average Restriction on Cash and Due From Bank Accounts $ 0.0 $ 84.1
Restricted Cash 38.0 $ 15.8
Subsidiaries [Member]    
Restrictions on Subsidiary Dividends, Loans or Advances [Line Items]    
Retained Earnings, Unappropriated 700.0  
Amount Available for Dividend Distribution without Affecting Capital Adequacy Requirements $ 198.0