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Information by business segment and by geographic area - Provisionally priced commodities sales (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) kt $ / t
Iron ore |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Change | (10.00%)
Iron ore | Accounts receivable |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Thousand metric tons | kt | 27,169
Provisional price | $ / t | 150.6
Change | (10.00%)
Effect on Revenue | $ | $ 409
Iron ore Pellets |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Change | (10.00%)
Iron ore Pellets | Accounts receivable |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Thousand metric tons | kt | 418
Provisional price | $ / t | 181.9
Change | (10.00%)
Effect on Revenue | $ | $ 8
Copper |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Change | (10.00%)
Copper | Accounts receivable |
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [line items] |
Thousand metric tons | kt | 89
Provisional price | $ / t | 9,723.4
Change | (10.00%)
Effect on Revenue | $ | $ 86

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