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Premises and Equipment (Tables)
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Schedule of Premises and Equipment
Major classifications of premises and equipment at December 31, 2022 and 2021 are summarized as follows:
dollars in millionsUseful Life (years)20222021
Landindefinite$352 $334 
Premises and leasehold improvements
3 - 40
1,458 1,308 
Furniture, equipment and software
3- 10
840 671 
Total2,650 2,313 
Less accumulated depreciation and amortization1,194 1,080 
Total premises and equipment$1,456 $1,233