Expenses by Nature (Tables)

12 Months Ended

Dec. 31, 2020

Analysis of income and expense [abstract]

Schedule of Expenses by Nature

(CAD$ in millions)	2020		2019
Employment-related costs:
Wages and salaries	$	971	$	1,057
Employee benefits and other wage-related costs	272		280
Bonus payments	128		207
Post-employment benefits and pension costs	124		105
	1,495		1,649
Transportation	1,378		1,476
Depreciation and amortization	1,510		1,619
Raw material purchases	715		974
Fuel and energy	697		881
Operating supplies consumed	620		743
Maintenance and repair supplies	648		742
Contractors and consultants	648		768
Overhead costs	268		277
Royalties	266		343
Other operating costs	62		45
	8,307		9,517
Adjusted for:
Capitalized production stripping costs	(499)		(680)
Change in inventory	81		52
Total cost of sales, general and administration, exploration and research and innovation expenses	$	7,889	$	8,889