Quarterly report pursuant to Section 13 or 15(d)

SEGMENT REPORTING - Results by Segment (Details)

v3.21.2
SEGMENT REPORTING - Results by Segment (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
segments
Jun. 30, 2020
USD ($)
Segment Reporting Information [Line Items]        
Number of operating segments | segments     4  
Number of reportable segments | segments     1  
Revenues $ 5,045 $ 1,093 $ 9,094 $ 1,452
Adjusted EBITDA 1,360 (82) 1,873 (59)
Steelmaking        
Segment Reporting Information [Line Items]        
Revenues 4,922 1,023 8,841 1,360
Adjusted EBITDA 1,395 (54) 1,932 (10)
Other Businesses        
Segment Reporting Information [Line Items]        
Revenues 123 70 253 92
Adjusted EBITDA 8 2 19 4
Corporate and eliminations        
Segment Reporting Information [Line Items]        
Adjusted EBITDA $ (43) $ (30) $ (78) $ (53)