Quarterly report pursuant to Section 13 or 15(d)

GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Goodwill (Details)

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GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Goodwill (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Goodwill [Line Items]    
Goodwill $ 1,005 $ 1,005
Steelmaking    
Goodwill [Line Items]    
Goodwill 956 956
Other Businesses    
Goodwill [Line Items]    
Goodwill $ 49 $ 49