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Premises, Equipment and Leasehold Improvements
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Premises, Equipment and Leasehold Improvement PREMISES, EQUIPMENT AND LEASEHOLD IMPROVEMENTS
Premises, equipment and leasehold improvements, stated at cost less accumulated depreciation and amortization, were as follows:
Table 66: Premises, Equipment and Leasehold Improvements
In millionsDecember 31, 2023December 31, 2022
Premises, equipment and leasehold improvements$18,358 $17,769 
Accumulated depreciation and amortization(9,841)(9,015)
Net book value$8,517 $8,754 

Depreciation expense on premises, equipment and leasehold improvements, as well as amortization expense, excluding intangible assets, primarily for capitalized internally developed software are shown in the following table:
Table 67: Depreciation and Amortization Expense
Year ended December 31
In millions
202320222021
Depreciation$900 $899 $844 
Amortization138 130 122 
Total depreciation and amortization$1,038 $1,029 $966