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PROPERTY (Notes)
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property PROPERTY
The following table provides a breakdown of property:

Property at Dec 31 Estimated Useful Lives (Years)
In millions20212020
Land and land improvements
0-25
$190 $186 
Buildings
5-50
420 421 
Machinery and equipment
3-20
6,090 5,974 
Other property
3-30
377 372 
Construction in progress— 91 136 
Total property$7,168 $7,089 

The following table provides information regarding depreciation expense and capitalized interest:

In millions202120202019
Depreciation expense $167 $181 $175 
Capitalized interest$5 $6 $8