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Business and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Inventory
The classes of inventory as of December 31 are summarized as follows ($ in millions):
20242023
Finished goods$1,145 $1,282 
Work in process465 459 
Raw materials720 853 
Total$2,330 $2,594 
Useful Lives of Depreciable Assets The provision for depreciation has been computed principally by the straight-line method based on the estimated useful lives of the depreciable assets as follows:
CategoryUseful Life
Buildings
30 years
Leased assets and leasehold improvementsAmortized over the lesser of the economic life of the asset or the term of the lease
Machinery and equipment
3 – 10 years
Customer-leased equipment
5 – 7 years
Estimated useful lives are periodically reviewed and, when appropriate, changes to estimates are made prospectively.
The classes of property, plant and equipment as of December 31 are summarized as follows ($ in millions):
20242023
Land and improvements$230 $210 
Buildings2,548 2,269 
Machinery and equipment4,430 4,106 
Customer-leased equipment1,883 1,794 
Gross property, plant and equipment9,091 8,379 
Less: accumulated depreciation(4,101)(3,826)
Property, plant and equipment, net$4,990 $4,553 
Classes of Property, Plant and Equipment The provision for depreciation has been computed principally by the straight-line method based on the estimated useful lives of the depreciable assets as follows:
CategoryUseful Life
Buildings
30 years
Leased assets and leasehold improvementsAmortized over the lesser of the economic life of the asset or the term of the lease
Machinery and equipment
3 – 10 years
Customer-leased equipment
5 – 7 years
Estimated useful lives are periodically reviewed and, when appropriate, changes to estimates are made prospectively.
The classes of property, plant and equipment as of December 31 are summarized as follows ($ in millions):
20242023
Land and improvements$230 $210 
Buildings2,548 2,269 
Machinery and equipment4,430 4,106 
Customer-leased equipment1,883 1,794 
Gross property, plant and equipment9,091 8,379 
Less: accumulated depreciation(4,101)(3,826)
Property, plant and equipment, net$4,990 $4,553