v3.25.4
Summary of significant accounting policies (Tables)
 12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Derivatives recognized in the consolidated balance sheets at December 31 are as follows:
(In millions)
2025
2024
Cash Flow Hedges
Other current assets
$—
$1
Other current liabilities
1
7
Other noncurrent liabilities
—
3
Schedule of Property, Plant and Equipment The estimated useful lives of property, plant and equipment (excluding land with raw material reserves) are
generally as follows:
Buildings and installations
20 to 35 years
Machines
10 to 30 years
Furniture, vehicles and tools
3 to 10 years
Property, plant and equipment, net was as follows:
As of December 31,
(In millions)
2025
2024
Land and mineral reserves
$3,337
$3,361
Buildings and installations
3,027
2,948
Machines, furniture, vehicles and tools
9,552
9,001
Construction in progress
470
439
Finance lease right-of-use assets
547
334
Total property, plant and equipment
16,933
16,083
Less: accumulated depreciation, depletion and impairment
(8,998)
(8,549)
Property, plant and equipment, net
$7,935
$7,534
Schedule of Finite-Lived Intangible Assets The estimated useful lives of long-lived intangible assets are as follows:
Customer lists
8 to 20 years
Patented and unpatented technology
8 to 20 years
Software
3 years
Trademarks, brand and other marketing-related items
15 to 25 years
As of December 31, 2025
(In millions)
Gross carrying amount
Accumulated amortization
Total intangible assets, net
Customer relationships
$1,649
$(399)
$1,250
Mining rights
256
(57)
199
Developed technology
182
(65)
117
Software
83
(77)
6
Trade names and trademarks
226
(87)
139
Other intangible assets
101
(84)
17
Intangible assets
$2,497
$(769)
$1,728
As of December 31, 2024
(In millions)
Gross carrying amount
Accumulated amortization
Total intangible assets, net
Customer relationships
$1,626
$(311)
$1,315
Mining rights
252
(51)
201
Developed technology
177
(45)
132
Software
81
(75)
6
Trade names and trademarks
230
(76)
154
Other intangible assets
103
(79)
24
Intangible assets
$2,469
$(637)
$1,832
Schedule Of Leased Assets, Useful Lives The estimated useful lives of the related leased assets are the lesser of the lease term or the following: 
 
Land
Indefinite
Rail fleet and equipment
25 years
Machinery and equipment
10 to 30 years
Buildings and construction
20 to 35 years
Furniture and fixtures
3 to 10 years
Land fleet equipment
3 to 15 years