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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Earnings Per Share Computation | The following table summarizes the computation of basic and diluted EPS:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(In millions, except per share amounts) | 2025 |  | 2024 |  | 2025 |  | 2024
Loss from continuing operations | $ | (231) |  |  | $ | (232) |  |  | $ | (1,190) |  |  | $ | (280) |
Net income from continuing operations attributable to noncontrolling interest | (17) |  |  | (12) |  |  | (42) |  |  | (33) |
Net loss from continuing operations attributable to Cliffs shareholders | (248) |  |  | (244) |  |  | (1,232) |  |  | (313) |
Loss from discontinued operations, net of tax | (3) |  |  | — |  |  | (3) |  |  | — |
Net loss attributable to Cliffs shareholders | $ | (251) |  |  | $ | (244) |  |  | $ | (1,235) |  |  | $ | (313) |
Weighted average number of shares: |  |  |  |  |  |  |
Basic | 495 |  |  | 468 |  |  | 495 |  | 478
Employee stock plans 1 | — |  |  | — |  |  | — |  | —
Diluted | 495 |  |  | 468 |  |  | 495 |  | 478
Loss per common share attributable to Cliffs shareholders - basic: |  |  |  |  |  |  |
Continuing operations | $ | (0.51) |  |  | $ | (0.52) |  |  | $ | (2.49) |  |  | $ | (0.66) |
Discontinued operations | — |  |  | — |  |  | — |  |  | — |
| $ | (0.51) |  |  | $ | (0.52) |  |  | $ | (2.49) |  |  | $ | (0.66) |
Loss per common share attributable to Cliffs shareholders - diluted: |  |  |  |  |  |  |
Continuing operations | $ | (0.51) |  |  | $ | (0.52) |  |  | $ | (2.49) |  |  | $ | (0.66) |
Discontinued operations | — |  |  | — |  |  | — |  |  | — |
| $ | (0.51) |  |  | $ | (0.52) |  |  | $ | (2.49) |  |  | $ | (0.66) |
1 Excluded from the diluted EPS calculation are anti-dilutive shares related to employee stock plans. For both the three and nine months ended September 30, 2025, 3 million shares were excluded. For both the three and nine months ended September 30, 2024, 2 million shares were excluded.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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