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, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Disaggregation of Revenue [Line Items]        
Revenues $ 5,092 $ 5,984 $ 10,291 $ 11,279
Steelmaking        
Disaggregation of Revenue [Line Items]        
Revenues 4,915 5,808 9,942 10,934
Steelmaking | Hot-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,115 1,357 2,243 2,478
Steelmaking | Cold-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 711 748 1,460 1,387
Steelmaking | Coated steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,546 1,789 3,169 3,406
Steelmaking | Stainless and electrical steel        
Disaggregation of Revenue [Line Items]        
Revenues 480 615 941 1,189
Steelmaking | Plate        
Disaggregation of Revenue [Line Items]        
Revenues 317 399 650 730
Steelmaking | Slab and other steel products        
Disaggregation of Revenue [Line Items]        
Revenues 318 366 653 693
Steelmaking | Other        
Disaggregation of Revenue [Line Items]        
Revenues 428 534 826 1,051
Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 177 176 349 345
Other Businesses | Other        
Disaggregation of Revenue [Line Items]        
Revenues $ 177 $ 176 $ 349 $ 345