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Expenses by Nature - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of expenses [abstract] |  |
Percentage of foreign operations utilizing U.S. dollar | 26.00% | 29.00%

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- Definition Disclosure of expenses. + References No definition available. + Details
Name: | teck_DisclosureOfExpensesAbstract
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of foreign operations. + References No definition available. + Details
Name: | teck_PercentageOfForeignOperations
Namespace Prefix: | teck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration