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 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
Steelmaking | Hot-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,269 1,050 3,747 3,495
Steelmaking | Cold-rolled steel        
Disaggregation of Revenue [Line Items]        
Revenues 651 740 2,038 2,593
Steelmaking | Coated steel        
Disaggregation of Revenue [Line Items]        
Revenues 1,748 1,757 5,154 5,338
Steelmaking | Stainless and electrical steel        
Disaggregation of Revenue [Line Items]        
Revenues 568 596 1,757 1,765
Steelmaking | Plate        
Disaggregation of Revenue [Line Items]        
Revenues 382 432 1,112 1,306
Steelmaking | Slab and other steel products        
Disaggregation of Revenue [Line Items]        
Revenues 322 370 1,015 1,121
Steelmaking | Other        
Disaggregation of Revenue [Line Items]        
Revenues 503 566 1,554 1,863
Other Businesses        
Disaggregation of Revenue [Line Items]        
Revenues 162 142 507 464
Other Businesses | Other        
Disaggregation of Revenue [Line Items]        
Revenues $ 162 $ 142 $ 507 $ 464