Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS - Consideration (Details)

v3.25.4
ACQUISITIONS - Consideration (Details)
$ / shares in Units, $ / shares in Units, $ in Millions, $ in Millions
Nov. 01, 2024
USD ($)
Nov. 01, 2024
CAD ($)
$ / shares
Nov. 18, 2021
USD ($)
Dec. 31, 2025
shares
Dec. 31, 2024
shares
Nov. 01, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
shares
Dec. 31, 2022
shares
Business Combination [Line Items]                
Common shares, outstanding (in shares)       569,759,243 493,948,905      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number       200,000 200,000   500,000 600,000
Stelco Holdings Inc                
Business Combination [Line Items]                
Total cash consideration $ 2,450 $ 3,418            
Total share exchange consideration 343 343            
Total debt consideration | $           $ 415    
Total purchase consideration | $     $ 3,208          
Common shares, outstanding (in shares)           54,448,388    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number           2,516,415    
Total consideration shares           56,964,803    
Foreign Currency Exchange Rate, Translation           0.7168    
Share price (in dollars per share) | (per share)   $ 60.00       $ 13.27    
Business Acquisition, Shares Exchange Ratio 0.454 0.454