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v3.22.4

Debt - Additional Information (Details) $ in Millions |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 01, 2023 CAD ($) | Feb. 01, 2023 USD ($) | Jan. 31, 2022 CAD ($) | Jan. 31, 2022 USD ($) | Dec. 31, 2022 CAD ($) payment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 CAD ($) | Dec. 31, 2022 USD ($) payment | Dec. 24, 2021 USD ($) | Jul. 12, 2021 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of bonds, notes and debentures |  |  |  |  | $ 1,323 |  | $ 155 |  |  |
Pre tax expense |  |  |  |  | (58) |  | 0 |  |  |
Principal amount |  |  |  |  | $ 7,167 |  | $ 7,374 |  |  |
Actual net debt-to-capitalization ratio |  |  |  |  | 0.19 |  | 0.22 | 0.19 |  |
Debt-to-capitalization ratio, maximum |  |  |  |  | 0.60 |  |  | 0.60 |  |
Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of borrowings including accrued interest, classified as financing activities |  |  |  |  | $ 120 | $ 90,000,000 |  |  |  |
Cash Tender Offers |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of borrowings including purchase premiums and accrued interest, classified as financing activities |  |  |  |  | 909 | $ 703,000,000 |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of borrowings including accrued interest, classified as financing activities | $ 144 | $ 108,000,000 |  |  |  |  |  |  |  |
Carmen de Andacollo |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 71 |  |  | $ 52,000,000 |  |
Antamina |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Ownership interest in joint operation |  |  |  |  | 22.50% | 22.50% |  |  |  |
Outstanding notes, except for notes due October 2035 |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Redemption price |  |  |  |  | 100.00% |  |  | 100.00% |  |
Outstanding notes, except for notes due October 2035 | Top of range |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Callable period prior to maturity |  |  |  |  | 6 months | 6 months |  |  |  |
Outstanding notes, except for notes due October 2035 | Bottom of range |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Callable period prior to maturity |  |  |  |  | 3 months | 3 months |  |  |  |
Three Point Seven Five Percent Notes | Forecast |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate | 3.75% | 3.75% |  |  |  |  |  |  |  |
Outstanding Notes Pursuant To Open Market Repurchase |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Pre tax expense |  |  |  |  | $ 5 |  |  |  |  |
Outstanding Notes Pursuant To Open Market Repurchase | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | $ 93,000,000 |  |  |  |
3.9% notes due July 2030 |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 3.90% |  |  | 3.90% |  |
Principal amount |  |  |  |  | $ 673 |  | $ 688 |  |  |
3.9% notes due July 2030 | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 3.90% |  |  | 3.90% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 47,000,000 |  |  |  |
6.125% notes due October 2035 (a) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.125% |  |  | 6.125% |  |
Principal amount |  |  |  |  | $ 449 |  | 761 |  |  |
6.125% notes due October 2035 (a) | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.125% |  |  | 6.125% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 24,000,000 |  |  |  |
6.125% notes due October 2035 (a) | Cash Tender Offers |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.125% |  |  | 6.125% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 249,000,000 |  |  |  |
6.25% notes due July 2041 (a) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.25% |  |  | 6.25% |  |
Principal amount |  |  |  |  | $ 531 |  | 997 |  |  |
6.25% notes due July 2041 (a) | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.25% |  |  | 6.25% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 8,000,000 |  |  |  |
6.25% notes due July 2041 (a) | Cash Tender Offers |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.25% |  |  | 6.25% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 391,000,000 |  |  |  |
5.2% notes due March 2042 (a) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 5.20% |  |  | 5.20% |  |
Principal amount |  |  |  |  | $ 529 |  | 500 |  |  |
5.2% notes due March 2042 (a) | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 5.20% |  |  | 5.20% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 4,000,000 |  |  |  |
5.4% notes due February 2043 (a) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 5.40% |  |  | 5.40% |  |
Principal amount |  |  |  |  | $ 492 |  | 473 |  |  |
5.4% notes due February 2043 (a) | Open Market Purchases |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 5.40% |  |  | 5.40% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 10,000,000 |  |  |  |
Outstanding Notes and Private Purchase | Cash Tender Offers |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | 650,000,000 |  |  |  |
Pre tax expense |  |  |  |  | $ 63 |  |  |  |  |
6.0% notes due August 2040 (a) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.00% |  |  | 6.00% |  |
Principal amount |  |  |  |  | $ 648 |  | 620 |  |  |
6.0% notes due August 2040 (a) | Cash Tender Offers |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 6.00% |  |  | 6.00% |  |
Repayments of bonds, notes and debentures |  |  |  |  |  | $ 10,000,000 |  |  |  |
4.75% notes due January 2022 |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  |  |  | 4.75% |  |  | 4.75% |  |
Principal amount |  |  |  |  | $ 0 |  | 190 |  |  |
4.75% notes due January 2022 | Other disposals of assets |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  |  | 4.75% | 4.75% |  |  |  |  |  |
Repayments of borrowings including accrued interest, classified as financing activities |  |  | $ 187 | $ 150,000,000 |  |  |  |  |  |
Quebrada Blanca Phase 2 project facility |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  | $ 2,500,000,000 |  |
Number of semi-annual payments | payment |  |  |  |  | 17 |  |  | 17 |  |
Principal amount |  |  |  |  | $ 3,322 |  | 2,785 |  |  |
Revolving credit facility |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 71 |  | $ 0 |  |  |
Undrawn borrowing facilities |  |  |  |  |  |  |  | $ 4,000,000,000.0 |  |
Actual net debt-to-capitalization ratio |  |  |  |  | 0.19 |  |  | 0.19 |  |
Revolving credit facility | Top of range |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Debt-to-capitalization ratio, maximum |  |  |  |  | 0.60 |  |  | 0.60 |  |
Stand alone credit facility |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  | $ 2,700 |  |  |  |  |
Surety Bond |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 849 |  |  |  |  |
One billion loan agreement |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  | $ 225,000,000
One billion loan agreement | Antamina |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0
Short-Term Loan Agreement |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 18,000,000 |
Short-Term Loan Agreement | Antamina |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 80,000,000 |

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