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

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

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

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details)

v3.25.0.1

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions	$ 119	$ 29
Pension benefits, employer contributions and payments	119
Expected employer contributions, next fiscal year	69
OPEB
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions	76	65
Employer contributions	76	65
Expected employer contributions, next fiscal year	74
OPEB \| VEBA
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions	0	0
Expected employer contributions, next fiscal year	0
OPEB \| Direct Payments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions	76	$ 65
Expected employer contributions, next fiscal year	$ 74

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