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ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following tables reflect the changes in Accumulated other comprehensive income related to Cliffs shareholders’ equity:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(In millions) | 2023 |  | 2022 |  | 2023 |  | 2022
Foreign Currency Translation |  |  |  |  |  |  |
Beginning balance | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |  |  | $ | 1 |
Other comprehensive loss before reclassifications | — |  |  | (2) |  |  | — |  |  | (4) |
Ending balance | $ | (1) |  |  | $ | (3) |  |  | $ | (1) |  |  | $ | (3) |
Derivative Instruments |  |  |  |  |  |  |
Beginning balance | $ | (150) |  |  | $ | 109 |  |  | $ | (16) |  |  | $ | 68 |
Other comprehensive income (loss) before reclassifications | (21) |  |  | 154 |  |  | (229) |  |  | 292 |
Income tax | 5 |  |  | (38) |  |  | 56 |  |  | (69) |
Other comprehensive income (loss) before reclassifications, net of tax | (16) |  |  | 116 |  |  | (173) |  |  | 223 |
Losses (gains) reclassified from AOCI to net income 1 | 63 |  |  | (74) |  |  | 93 |  |  | (158) |
Income tax expense (benefit)2 | (16) |  |  | 19 |  |  | (23) |  |  | 37 |
Net losses (gains) reclassified from AOCI to net income | 47 |  |  | (55) |  |  | 70 |  |  | (121) |
Ending balance | $ | (119) |  |  | $ | 170 |  |  | $ | (119) |  |  | $ | 170 |
Pension and OPEB |  |  |  |  |  |  |
Beginning balance | $ | 1,794 |  |  | $ | 550 |  |  | $ | 1,847 |  |  | $ | 549 |
Other comprehensive income before reclassifications | — |  |  | 119 |  |  | — |  |  | 119 |
Income tax | — |  |  | (28) |  |  | — |  |  | (28) |
Other comprehensive income before reclassifications, net of tax | — |  |  | 91 |  |  | — |  |  | 91 |
Losses (gains) reclassified from AOCI to net income 3 | (35) |  |  | 3 |  |  | (106) |  |  | 4 |
Income tax expense (benefit)2 | 8 |  |  | (1) |  |  | 26 |  |  | (1) |
Net losses (gains) reclassified from AOCI to net income | (27) |  |  | 2 |  |  | (80) |  |  | 3 |
Ending balance | $ | 1,767 |  |  | $ | 643 |  |  | $ | 1,767 |  |  | $ | 643 |
Total AOCI Ending Balance | $ | 1,647 |  |  | $ | 810 |  |  | $ | 1,647 |  |  | $ | 810 |
1 Amounts recognized in Cost of goods sold in the Statements of Unaudited Condensed Consolidated Operations.
2 Amounts recognized in Income tax expense in the Statements of Unaudited Condensed Consolidated Operations.
3 Amounts recognized in Net periodic benefit credits other than service cost component in the Statements of Unaudited Condensed Consolidated Operations.

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