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Expenses by Nature (Tables) | 12 Months Ended
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Dec. 31, 2018
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Schedule of Expenses by Nature |
|  | 2018 |  |  | 2017 |
(CAD$ in millions) |  |  |  |  | (restated) |
Employment-related costs: |  |  |  |  |  |  |  |
Wages and salaries |  | $ | 1,005 |  |  | $ | 899 |
Employee benefits and other wage-related costs |  |  | 247 |  |  |  | 236 |
Bonus payments |  |  | 191 |  |  |  | 192 |
Post-employment benefits and pension costs |  |  | 112 |  |  |  | 122 |
|  |  | 1,555 |  |  |  | 1,449 |
Transportation |  |  | 1,408 |  |  |  | 1,245 |
Depreciation and amortization |  |  | 1,483 |  |  |  | 1,492 |
Raw material purchases |  |  | 914 |  |  |  | 824 |
Fuel and energy |  |  | 830 |  |  |  | 657 |
Operating supplies consumed |  |  | 640 |  |  |  | 569 |
Maintenance and repair supplies |  |  | 775 |  |  |  | 698 |
Contractors and consultants |  |  | 738 |  |  |  | 570 |
Overhead costs |  |  | 365 |  |  |  | 287 |
Royalties |  |  | 370 |  |  |  | 453 |
Other operating costs |  |  | 15 |  |  |  | 9 |
|  |  | 9,093 |  |  |  | 8,253 |
Less: |  |  |  |  |  |  |  |
Capitalized production stripping costs |  |  | (707 | ) |  |  | (678 | )
Change in inventory |  |  | (197 | ) |  |  | (3 | )
Total cost of sales, general and administration, exploration and research and development expenses |  | $ | 8,189 |  |  | $ | 7,572 |

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