SCOPE OF CONSOLIDATION - Other Investments Narrative (Details) - Other investments - USD ($) $ in Millions |
12 Months Ended | 46 Months Ended | |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2024 |
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| ArcelorMittal XCarb® | |||
| Disclosure of financial assets [line items] | |||
| Payments for acquisition | $ 19 | $ 11 | $ 219 |
| Unrealized gains (losses) recognized in other comprehensive income | 3 | 13 | |
| ArcelorMittal XCarb® | Maximum | |||
| Disclosure of financial assets [line items] | |||
| Annual investment commitment | 100 | ||
| Stalprodukt S.A. | |||
| Disclosure of financial assets [line items] | |||
| Gains (losses) on financial assets measured at fair value through other comprehensive income, before tax | $ 2 | $ 3 | |
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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- Definition The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, before tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash outflow to acquire equity or debt instruments of other entities (other than payments for those instruments considered to be cash equivalents or those held for dealing or trading purposes), classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of other comprehensive income, net of tax, related to gains (losses) from changes in the fair value of investments in equity instruments that the entity has designated at fair value through other comprehensive income applying paragraph 5.7.5 of IFRS 9. [Refer: Other comprehensive income] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Annual Investment Commitment, Investments In Equity Instruments Designated At Fair Value Through Other Comprehensive Income No definition available.
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