Cleveland-Cliffs Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

ACQUISITIONS - Consideration (Details)

v3.25.1

ACQUISITIONS - Consideration (Details) $ / shares in Units, $ / shares in Units, $ in Millions, $ in Millions	Nov. 01, 2024 USD ($) shares	Nov. 01, 2024 CAD ($) $ / shares shares	Mar. 31, 2025 shares	Dec. 31, 2024 shares	Nov. 01, 2024 USD ($) $ / shares shares
Business Acquisition [Line Items]
Common shares, outstanding (in shares)			494,490,795	493,948,905
Stelco Holdings Inc
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 2,450	$ 3,418
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method	343	343
Business Combination, Consideration Transferred \| $	$ 3,208
Common shares, outstanding (in shares)					54,448,388
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number					2,516,415
Total consideration shares					56,964,803
Price per share (in dollars per share) \| (per share)		$ 60.00			$ 13.27
Foreign Currency Exchange Rate, Translation					0.7168
Business Acquisition, Shares Exchange Ratio	0.454	0.454
Shares of Cliffs common shares issued to Stelco Holdings stockholders (in shares)	25,862,021	25,862,021
Business Combination, Consideration Transferred, Debt Consideration \| $					$ 415

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