Quarterly report [Sections 13 or 15(d)]

SEGMENT REPORTING - Summary of Assets by Segment (Details)

v3.25.1
SEGMENT REPORTING - Summary of Assets by Segment (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Segment Reporting, Asset Reconciling Item [Line Items]    
Total assets $ 20,836 $ 20,947
Steelmaking [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Total assets 20,200 20,327
Other Businesses [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Total assets $ 636 $ 620