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PROPERTY, PLANT AND EQUIPMENT
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
NOTE 6 - PROPERTY, PLANT AND EQUIPMENT
The following table indicates the carrying value of each of the major classes of our depreciable assets:
(In Millions)
March 31,
2021
December 31,
2020
Land, land improvements and mineral rights$1,241 $1,213 
Buildings1,004 703 
Equipment7,877 6,786 
Other173 151 
Construction in progress407 1,364 
Total property, plant and equipment1
10,702 10,217 
Allowance for depreciation and depletion(1,688)(1,474)
Property, plant and equipment, net$9,014 $8,743 
1 Includes right-of-use assets related to finance leases of $365 million and $361 million as of March 31, 2021 and December 31, 2020, respectively.
We recorded depreciation and depletion expense of $215 million and $36 million for the three months ended March 31, 2021 and 2020, respectively