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Asset and Goodwill Impairment Testing - Summary of Key Assumptions Used in Our Asset Impairment Reversal and Goodwill Impairment Analyses (Detail) - USD_per_LB | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Quebrada Blanca |  |
Disclosure of information for cash-generating units [line items] |  |
Post-tax real discount rates - Steelmaking Coal group of CGUs | 7.00% | 6.50%
Copper |  |
Disclosure of information for cash-generating units [line items] |  |
Future commodity price used in cash flow projections | 3.90 | 3.60

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