Annual report pursuant to Section 13 and 15(d)

PREMISES AND EQUIPMENT (Details)

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PREMISES AND EQUIPMENT (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment, Net, by Type [Abstract]      
Premises and equipment, gross $ 1,723 $ 1,705  
Less accumulated depreciation and amortization (960) (915)  
Net premises and equipment 763 790  
Property Plant and Equipment Income Statement Disclosures [Abstract]      
Total depreciation and amortization of premises and equipment 116 130 $ 123
Rental income credited to occupancy expense 11 13 $ 14
Land and land improvements      
Property, Plant and Equipment, Net, by Type [Abstract]      
Premises and equipment, gross 189 188  
Buildings      
Property, Plant and Equipment, Net, by Type [Abstract]      
Premises and equipment, gross 587 579  
Leasehold improvements      
Property, Plant and Equipment, Net, by Type [Abstract]      
Premises and equipment, gross 205 199  
Equipment      
Property, Plant and Equipment, Net, by Type [Abstract]      
Premises and equipment, gross $ 742 $ 739