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
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Revenues $ 5,955 $ 4,049
Steelmaking    
Disaggregation of Revenue [Line Items]    
Revenues 5,794 3,919
Other Businesses    
Disaggregation of Revenue [Line Items]    
Revenues 161 130
Automotive | Steelmaking    
Disaggregation of Revenue [Line Items]    
Revenues 1,607 1,287
Automotive | Other Businesses    
Disaggregation of Revenue [Line Items]    
Revenues 122 105
Infrastructure and manufacturing | Steelmaking    
Disaggregation of Revenue [Line Items]    
Revenues 1,542 954
Infrastructure and manufacturing | Other Businesses    
Disaggregation of Revenue [Line Items]    
Revenues 15 10
Distributors and converters | Steelmaking    
Disaggregation of Revenue [Line Items]    
Revenues 1,829 1,248
Distributors and converters | Other Businesses    
Disaggregation of Revenue [Line Items]    
Revenues 24 15
Steel producers | Steelmaking    
Disaggregation of Revenue [Line Items]    
Revenues $ 816 $ 430