Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Revenues By Market (Details)

v3.21.2
REVENUES - Revenues By Market (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]        
Revenues $ 5,045 $ 1,093 $ 9,094 $ 1,452
Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 4,922 1,023 8,841 1,360
Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 123 70 253 92
Automotive | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,130 309 2,428 411
Automotive | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 96 49 201 65
Infrastructure and manufacturing | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,312 191 2,286 230
Infrastructure and manufacturing | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 11 13 21 17
Distributors and converters | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 1,948 139 3,225 191
Distributors and converters | Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 16 8 31 10
Steel producers | Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues $ 532 $ 384 $ 902 $ 528