Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS - Pro Forma (Details)

v3.25.4
ACQUISITIONS - Pro Forma (Details) - Stelco Holdings Inc - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Business Combination, Pro Forma Information [Line Items]    
Revenues $ 20,874 $ 24,158
Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax $ (629) $ 202