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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of inventories
Inventories consisted of the following:
December 31,
(in millions)20212020
Finished goods$215 $133 
Raw materials177 83 
In-process inventories20 16 
Parts and supplies72 66 
Total inventories$484 $298 
Schedule of lives used in computing depreciation for depreciable assets and components of property, plant and equipment, net The lives used in computing depreciation for significant asset classes are as follows:
Asset
Range of Useful
Lives, in Years
Land and improvements
10 to 30
Buildings and improvements
1 to 30
Machinery and equipment
1 to 30
Furniture and fixtures
3 to 10
Right-of-use (“ROU”) finance leases
3 to 18
Other
5 to 30

Property, plant and equipment, net consisted of the following:
December 31,
(in millions)20212020
Machinery and equipment$4,033 $3,881 
Buildings and improvements88 88 
ROU finance leases81 80 
Land and improvements71 47 
Furniture and fixtures37 38 
Construction in progress142 100 
Other15 15 
4,467 4,249 
Less: Accumulated depreciation(2,194)(2,009)
Total property, plant and equipment, net$2,273 $2,240