Quarterly report [Sections 13 or 15(d)]

Statements Of Unaudited Condensed Consolidated Comprehensive Income (Loss)

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Statements Of Unaudited Condensed Consolidated Comprehensive Income (Loss) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Statement of Comprehensive Income [Abstract]    
Net loss $ (229) $ (486)
Other comprehensive income (loss):    
Changes in pension and OPEB, net of tax (23) (27)
Changes in derivative instruments, net of tax (24) 101
Changes in foreign currency translation (20) 1
Total other comprehensive income (loss) (67) 75
Comprehensive loss (296) (411)
Comprehensive income attributable to noncontrolling interests (8) (12)
Comprehensive loss attributable to Cliffs shareholders $ (304) $ (423)