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Fixed Assets (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Fixed Assets, Net
Fixed assets, net, consisted of the following:
(dollars in millions)Estimated
Useful Lives
20232022
Land$743 $744 
Buildings and improvements
10-45 years
8,151 7,519 
Machinery, tools, and equipment
3-20 years
18,904 17,479 
Other, including assets under construction 3,594 3,374 
Fixed assets, gross31,392 29,116 
Accumulated depreciation (15,644)(13,946)
Fixed assets, net$15,748 $15,170