Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Revenues By Market (Details)

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REVENUES - Revenues By Market (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disaggregation of Revenue [Line Items]        
Revenues $ 5,605 $ 5,653 $ 16,884 $ 17,945
Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 5,443 5,511 16,377 17,481
Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 162 142 507 464
Automotive | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,958 1,734 5,808 4,985
Automotive | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 133 113 415 359
Infrastructure and manufacturing | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,427 1,462 4,315 4,619
Infrastructure and manufacturing | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 9 14 29 43
Distributors and converters | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,321 1,468 4,020 5,137
Distributors and converters | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 20 15 63 62
Steel producers | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues $ 737 $ 847 $ 2,234 $ 2,740