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DEFERRED INCOME TAXES - Expiry Dates of Tax Losses and AMT (Details) - Non-capital tax losses $ in Millions | Dec. 31, 2020 USD ($)
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | $ 6,270
Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 2,176
BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 1,008
Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 1,050
TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 1,455
Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 164
Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 417
2021 |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 13
2021 | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2021 | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 13
2021 | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2021 | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2021 | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2021 | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2022 |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 154
2022 | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2022 | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2022 | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2022 | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2022 | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 150
2022 | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 4
2023 |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 275
2023 | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2023 | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 263
2023 | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2023 | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2023 | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2023 | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 12
2024 |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 77
2024 | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2024 | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 77
2024 | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2024 | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2024 | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2024 | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2025+ |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 2,866
2025+ | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 2,176
2025+ | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 655
2025+ | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2025+ | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
2025+ | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 14
2025+ | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 21
No expiry date |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 2,885
No expiry date | Canada |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
No expiry date | BARBADOS |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
No expiry date | Chile |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 1,050
No expiry date | TANZANIA, UNITED REPUBLIC OF |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 1,455
No expiry date | Zambia |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | 0
No expiry date | Other |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |
Unused tax losses for which no deferred tax asset recognised | $ 380

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