Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Revenues By Product Line (Details)

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REVENUES - Revenues By Product Line (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Disaggregation of Revenue [Line Items]        
Revenues $ 5,984 $ 6,337 $ 11,279 $ 12,292
Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 5,808 6,176 10,934 11,970
Steelmaking | Hot-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,357 1,251 2,478 2,445
Steelmaking | Cold-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 748 869 1,387 1,853
Steelmaking | Coated steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,789 1,806 3,406 3,581
Steelmaking | Stainless and electrical steel        
Disaggregation of Revenue [Line Items]        
Revenues 615 618 1,189 1,169
Steelmaking | Plate        
Disaggregation of Revenue [Line Items]        
Revenues 399 453 730 874
Steelmaking | Slab and other steel products        
Disaggregation of Revenue [Line Items]        
Revenues 366 417 693 751
Steelmaking | Other        
Disaggregation of Revenue [Line Items]        
Revenues 534 762 1,051 1,297
Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 176 161 345 322
Other Businesses | Other        
Disaggregation of Revenue [Line Items]        
Revenues $ 176 $ 161 $ 345 $ 322