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REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jan. 01, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Percentage Of Increase In ACL Adjusted In Capital Measures   25.00%
CECL, amount excluded to be phased-on during after two years $ 48.6  
Commercial And Financial Standby Letters Of Credit [Member]    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Commitmets to extend credit 113.0  
Commitments To Extend Credit [Member]    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Commitmets to extend credit 2,000.0  
Commitments To Extend Credit [Member] | Credit Card [Member]    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Commitmets to extend credit 1,200.0  
ASU 2016-13 | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Cumulative Effect Of New Accounting Principle In Period Of Adoption 1 $ 16.2  
Basel III [Member]    
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]    
Capital Conservation Buffer 2.50%