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Segmented Information - Schedule of Operating Segments (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | $ 13,481 | $ 8,948
Cost of sales | (8,400) | (7,615)
Gross profit | 5,081 | 1,333
Impairment reversal (Note 7(a)) | 215 | (1,244)
Other operating income (expense) | (446) | (999)
Profit (loss) from operations | 4,850 | (910)
Net finance income (expense) | (210) | (268)
Non-operating income (expense) | (105) | 43
Share of loss of associates and joint ventures | (3) | (1)
Profit (loss) before taxes | 4,532 | (1,136)
Capital expenditures | 4,713 | 3,628
Goodwill (Note 16) | 1,091 | 1,093
Total assets | 47,368 | 41,278
Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 13,992 | 9,412
Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | (511) | (464)
Copper |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 3,452 | 2,419
Cost of sales | (1,711) | (1,560)
Gross profit | 1,741 | 859
Impairment reversal (Note 7(a)) | 215 | 0
Other operating income (expense) | (14) | (323)
Profit (loss) from operations | 1,942 | 536
Net finance income (expense) | (116) | (151)
Non-operating income (expense) | (137) | 38
Share of loss of associates and joint ventures | (3) | 1
Profit (loss) before taxes | 1,686 | 424
Capital expenditures | 3,074 | 1,990
Goodwill (Note 16) | 389 | 391
Total assets | 18,077 | 14,546
Copper | Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 3,452 | 2,419
Copper | Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 0 | 0
Zinc |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 3,063 | 2,700
Cost of sales | (2,375) | (2,177)
Gross profit | 688 | 523
Impairment reversal (Note 7(a)) | 0 | 0
Other operating income (expense) | (41) | (98)
Profit (loss) from operations | 647 | 425
Net finance income (expense) | (47) | (44)
Non-operating income (expense) | 4 | (4)
Share of loss of associates and joint ventures | 0 | 0
Profit (loss) before taxes | 604 | 377
Capital expenditures | 259 | 247
Goodwill (Note 16) | 0 | 0
Total assets | 4,401 | 4,006
Zinc | Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 3,574 | 3,164
Zinc | Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | (511) | (464)
Steelmaking Coal |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 6,251 | 3,375
Cost of sales | (3,466) | (3,098)
Gross profit | 2,785 | 277
Impairment reversal (Note 7(a)) | 0 | 0
Other operating income (expense) | 153 | (193)
Profit (loss) from operations | 2,938 | 84
Net finance income (expense) | (91) | (56)
Non-operating income (expense) | 0 | 13
Share of loss of associates and joint ventures | 0 | 0
Profit (loss) before taxes | 2,847 | 41
Capital expenditures | 1,284 | 1,284
Goodwill (Note 16) | 702 | 702
Total assets | 18,390 | 17,266
Steelmaking Coal | Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 6,251 | 3,375
Steelmaking Coal | Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 0 | 0
Energy |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 715 | 454
Cost of sales | (848) | (780)
Gross profit | (133) | (326)
Impairment reversal (Note 7(a)) | 0 | (1,244)
Other operating income (expense) | (21) | (28)
Profit (loss) from operations | (154) | (1,598)
Net finance income (expense) | (26) | (26)
Non-operating income (expense) | 0 | 0
Share of loss of associates and joint ventures | 0 | 0
Profit (loss) before taxes | (180) | (1,624)
Capital expenditures | 83 | 91
Goodwill (Note 16) | 0 | 0
Total assets | 2,704 | 2,658
Energy | Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 715 | 454
Energy | Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 0 | 0
Corporate |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 0 | 0
Cost of sales | 0 | 0
Gross profit | 0 | 0
Impairment reversal (Note 7(a)) | 0 | 0
Other operating income (expense) | (523) | (357)
Profit (loss) from operations | (523) | (357)
Net finance income (expense) | 70 | 9
Non-operating income (expense) | 28 | (4)
Share of loss of associates and joint ventures | 0 | (2)
Profit (loss) before taxes | (425) | (354)
Capital expenditures | 13 | 16
Goodwill (Note 16) | 0 | 0
Total assets | 3,796 | 2,802
Corporate | Segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | 0 | 0
Corporate | Less intra-segment revenue |  |
Disclosure of operating segments [line items] |  |
Revenue (Note 5(a)) | $ 0 | $ 0

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