v3.26.3
PROPERTY, PLANT AND EQUIPMENT
 9 Months Ended
Sep. 30, 2026
Property, Plant, and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
NOTE 5 - PROPERTY, PLANT AND EQUIPMENT
The following table indicates the carrying value of each of the major classes of our depreciable assets:
(In millions)September 30,
2026		December 31,
2025
Land, land improvements and mineral rights$1,462 $1,463 
Buildings1,201 1,205 
Equipment11,819 11,630 
Other342 357 
Construction in progress799 655 
Total property, plant and equipment1
15,623 15,310 
Allowance for depreciation and depletion(6,437)(5,829)
Property, plant and equipment, net$9,186 $9,481 
1 Includes right-of-use assets related to finance leases of $570 million and $576 million as of September 30, 2026 and December 31, 2025, respectively.
We recorded depreciation and depletion expense of $240 million and $723 million for the three and nine months ended September 30, 2026, respectively, and $268 million and $906 million for the three and nine months ended September 30, 2025, respectively.
During the second quarter of 2025, we decided to indefinitely idle our Steelton, Conshohocken, and Riverdale facilities. As a result, a $39 million Asset impairment was recorded to Property, plant and equipment, net and accelerated depreciation of $12 million and $131 million was recorded for the three and nine months ended September 30, 2025, included within depreciation and depletion expense.