Quarterly report [Sections 13 or 15(d)]

REVENUES - Revenues By Market (Details)

v3.25.3
REVENUES - Revenues By Market (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Disaggregation of Revenue [Line Items]        
Revenues $ 4,734 $ 4,569 $ 14,297 $ 14,860
Steelmaking [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 4,585 4,439 13,888 14,429
Steelmaking [Member] | Third Party        
Disaggregation of Revenue [Line Items]        
Revenues 4,561 4,419 13,799 14,361
Other Businesses [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 173 150 498 499
Automotive | Steelmaking [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 1,356 1,334 3,902 4,411
Automotive | Other Businesses [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 144 123 403 411
Infrastructure and manufacturing | Steelmaking [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 1,326 1,160 4,169 3,973
Infrastructure and manufacturing | Other Businesses [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 11 9 35 29
Distributors and converters | Steelmaking [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 1,288 1,317 3,949 4,131
Distributors and converters | Other Businesses [Member]        
Disaggregation of Revenue [Line Items]        
Revenues 18 18 60 59
Other | Steelmaking [Member]        
Disaggregation of Revenue [Line Items]        
Revenues $ 591 $ 608 $ 1,779 $ 1,846