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Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS - Pro Forma (Details)

v3.22.0.1
ACQUISITIONS - Pro Forma (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
ArcelorMittal USA and AK Steel Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Revenues, pro forma Ìý $ 12,837 $ 17,163
Net income (loss) attributable to Cliffs shareholders, pro forma Ìý (520) (11)
Expenses, pro forma Ìý $ 32 76
Statutory tax rate, pro forma Ìý 24.30% Ìý
Income tax benefit (expense), pro forma Ìý $ 170 117
ArcelorMittal USA and AK Steel | Intersegment Eliminations Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Revenues, pro forma Ìý 844 1,499
Ferrous Processing and Trading Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Revenues, pro forma $ 21,701 13,549 Ìý
Net income (loss) attributable to Cliffs shareholders, pro forma $ 3,074 (526) Ìý
Franchise | ArcelorMittal USA and AK Steel Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Net income (loss) attributable to Cliffs shareholders, pro forma Ìý 140 129
Fair Value Adjustment to Inventory | ArcelorMittal USA and AK Steel Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Net income (loss) attributable to Cliffs shareholders, pro forma Ìý 96 362
Acquisition-related costs | ArcelorMittal USA and AK Steel Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Net income (loss) attributable to Cliffs shareholders, pro forma Ìý 93 $ 93
Restructuring Costs | ArcelorMittal USA Ìý Ìý Ìý
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Ìý Ìý Ìý
Net income (loss) attributable to Cliffs shareholders, pro forma Ìý $ 1,820 Ìý