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QB2 Advances from SMM/SC (Tables) | 12 Months Ended
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Dec. 31, 2020
Financial Instruments [Abstract] |
Scheduled Principal Payments |
($ in millions) |  | December 31, 2020 |  | December 31, 2019
|  | Face Value (US$) |  | Carrying Value (CAD$) |  | Fair Value (CAD$) |  | Face Value (US$) |  | Carrying Value (CAD$) |  | Fair Value (CAD$)
4.5% notes due January 2021 (b) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 117 |  |  | $ | 152 |  |  | $ | 155 |
4.75% notes due January 2022 (b) |  | 150 |  |  | 190 |  |  | 195 |  |  | 202 |  |  | 262 |  |  | 273 |
3.75% notes due February 2023 (b) |  | 108 |  |  | 139 |  |  | 144 |  |  | 220 |  |  | 289 |  |  | 298 |
3.9% notes due July 2030 (a) |  | 550 |  |  | 690 |  |  | 781 |  |  | — |  |  | — |  |  | — |
6.125% notes due October 2035 |  | 609 |  |  | 764 |  |  | 1,005 |  |  | 609 |  |  | 779 |  |  | 932 |
6.0% notes due August 2040 |  | 490 |  |  | 622 |  |  | 782 |  |  | 490 |  |  | 634 |  |  | 712 |
6.25% notes due July 2041 |  | 795 |  |  | 1,001 |  |  | 1,309 |  |  | 795 |  |  | 1,021 |  |  | 1,187 |
5.2% notes due March 2042 |  | 399 |  |  | 502 |  |  | 596 |  |  | 399 |  |  | 512 |  |  | 537 |
5.4% notes due February 2043 |  | 377 |  |  | 475 |  |  | 571 |  |  | 377 |  |  | 484 |  |  | 520 |
|  | 3,478 |  |  | 4,383 |  |  | 5,383 |  |  | 3,209 |  |  | 4,133 |  |  | 4,614 |
QB2 project financing facility (c) |  | 1,147 |  |  | 1,423 |  |  | 1,459 |  |  | — |  |  | — |  |  | — |
Revolving credit facilities (d) |  | 262 |  |  | 334 |  |  | 334 |  |  | — |  |  | — |  |  | — |
Antamina credit facilities (e) |  | 90 |  |  | 115 |  |  | 115 |  |  | 23 |  |  | 29 |  |  | 29 |
|  | $ | 4,977 |  |  | $ | 6,255 |  |  | $ | 7,291 |  |  | $ | 3,232 |  |  | $ | 4,162 |  |  | $ | 4,643 |
Less current portion of debt |  | (90) |  |  | (115) |  |  | (115) |  |  | (23) |  |  | (29) |  |  | (29) |
|  | $ | 4,887 |  |  | $ | 6,140 |  |  | $ | 7,176 |  |  | $ | 3,209 |  |  | $ | 4,133 |  |  | $ | 4,614 |
Amounts outstanding under the facility bear interest at LIBOR plus an applicable margin.
($ in millions) |  | December 31, 2020 |  | December 31, 2019
|  | Face Value (US$) |  | Carrying Value (CAD$) |  | Fair Value (CAD$) |  | Face Value (US$) |  | Carrying Value (CAD$) |  | Fair Value (CAD$)
QB2 Advances from SMM/SC |  | $ | 739 |  |  | $ | 934 |  |  | $ | 941 |  |  | $ | 708 |  |  | $ | 912 |  |  | $ | 912 |
Summary of Debt Continuity | Debt Continuity
($ in millions) |  | US$ |  | CAD$ Equivalent
|  | 2020 |  | 2019 |  | 2020 |  | 2019
As at January 1 |  | $ | 3,204 |  |  | $ | 3,798 |  |  | $ | 4,162 |  |  | $ | 5,181 |
Cash flows |  |  |  |  |  |  |  |
Issuance of debt |  | 1,802 |  |  | — |  |  | 2,426 |  |  | — |
Debt redemption or purchase |  | (315) |  |  | (638) |  |  | (426) |  |  | (835) |
Scheduled debt repayments |  | (23) |  |  | — |  |  | (31) |  |  | — |
Revolving credit facilities |  | 262 |  |  | — |  |  | 363 |  |  | — |
Non-cash changes |  |  |  |  |  |  |  |
Loss on debt redemption or purchase |  | 8 |  |  | 38 |  |  | 11 |  |  | 50 |
Changes in foreign exchange rates |  | — |  |  | — |  |  | (216) |  |  | (244) |
Finance fees and discount amortization |  | (29) |  |  | — |  |  | (39) |  |  | — |
Other |  | 4 |  |  | 6 |  |  | 5 |  |  | 10 |
As at December 31 |  | $ | 4,913 |  |  | $ | 3,204 |  |  | $ | 6,255 |  |  | $ | 4,162 |
The continuity for the advances is as follows:
($ in millions) |  | US$ |  | CAD$ Equivalent
|  | 2020 |  | 2019 |  | 2020 |  | 2019
As at January 1 |  | $ | 702 |  |  | $ | — |  |  | $ | 912 |  |  | $ | — |
Cash flows |  |  |  |  |  |  |  |
Advances |  | 31 |  |  | 708 |  |  | 41 |  |  | 946 |
Finance fees paid |  | — |  |  | (6) |  |  | — |  |  | (8) |
Non-cash changes |  |  |  |  |  |  |  |
Finance fee amortization |  | 1 |  |  | — |  |  | 1 |  |  | — |
Changes in foreign exchange rates |  | — |  |  | — |  |  | (20) |  |  | (26) |
As at December 31 |  | $ | 734 |  |  | $ | 702 |  |  | $ | 934 |  |  | $ | 912 |

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