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QB2 Advances from SMM/SC - Summary of Amounts Outstanding (Details) $ in Millions, $ in Millions | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CAD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 CAD ($)
--- | --- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings |  | $ 7,374 |  | $ 6,255
Face Value |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings | $ 5,906 |  | $ 4,977 |
Fair Value |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings |  | 8,570 |  | 7,291
Quebrada Blanca Phase 2 project facility |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings | 2,300 | 2,785 |  | 1,423
Quebrada Blanca Phase 2 project facility | SSM/SC |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings |  | 1,263 |  | 934
Quebrada Blanca Phase 2 project facility | Face Value |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings | 2,252 |  | 1,147 |
Quebrada Blanca Phase 2 project facility | Face Value | SSM/SC |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings | $ 1,003 |  | $ 739 |
Quebrada Blanca Phase 2 project facility | Fair Value |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings |  | 2,929 |  | 1,459
Quebrada Blanca Phase 2 project facility | Fair Value | SSM/SC |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Borrowings |  | $ 1,288 |  | $ 941

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