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

STOCK COMPENSATION PLANS - Restricted Stock (Details)

v3.25.4

STOCK COMPENSATION PLANS - Restricted Stock (Details) - Restricted Stock Units (RSUs) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	3.1	2.5	2.4
Outstanding at beginning of year, weighted average grant date fair value (in dollars per share)	$ 19.40	$ 18.87	$ 13.66
Granted (in shares)	2.6	1.2	1.2
Granted, weighted average grant date fair value (in dollars per share)	$ 11.85	$ 19.54	$ 19.30
Distributed (in shares)	(0.9)	(0.6)	(0.9)
Distributed, weighted average grant date fair value (in dollars per share)	$ 19.24	$ 17.55	$ 5.99
Forfeited/canceled (in shares)	(0.4)	0.0	(0.2)
Forfeited/canceled, weighted average grant date fair value (in dollars per share)	$ 14.54	$ 19.62	$ 19.84
Outstanding at end of year (in shares)	4.4	3.1	2.5
Outstanding at end of year, weighted average grant date fair value (in dollars per share)	$ 15.38	$ 19.40	$ 18.87
Performance/vesting period	3 years

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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