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Revenues (Tables)
 12 Months Ended
Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [abstract]  
Summary of Revenue Disaggregated by Geographical Region
(CAD$ in millions)2020
 CopperZincSteelmaking
Coal		EnergyTotal
Copper$2,119 $— $— $— $2,119 
Zinc189 2,062 — — 2,251 
Steelmaking coal— — 3,375 — 3,375 
Blended bitumen— — — 454 454 
Silver35 432 — — 467 
Lead5 356 — — 361 
Other71 314 — — 385 
Intra-segment— (464)— — (464)
$2,419 $2,700 $3,375 $454 $8,948 

(CAD$ in millions)2019
 CopperZincSteelmaking
Coal		EnergyTotal
Copper$2,158 $— $— $— $2,158 
Zinc163 2,366 — — 2,529 
Steelmaking coal— — 5,522 — 5,522 
Blended bitumen— — — 975 975 
Silver24 376 — — 400 
Lead5 395 — — 400 
Other119 350 — — 469 
Intra-segment— (519)— — (519)
$2,469 $2,968 $5,522 $975 $11,934 
b) Total Revenues by Regions

The following table shows our revenues disaggregated by geographical region. Revenues are attributed to regions based on the destination port or delivery location as designated by the customer.

(CAD$ in millions)20202019
Asia
China$1,861 $1,983 
Japan1,211 1,813 
South Korea982 1,174 
India588 947 
Other757 1,077 
Americas
United States1,189 1,617 
Canada1,027 1,376 
Latin America166 236 
Europe
Germany610 486 
Finland124 263 
Spain163 224 
Other270 738 
$8,948 $11,934