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Contingencies - Additional Information (Detail) CAD in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 CAD
Disclosure Of Contingencies [Abstract] |
Litigation claim by plaintiff | CAD 9

X
- Definition Contingent liability litigation claim. + References No definition available. + Details
Name: | teck_ContingentLiabilityLitigationClaim
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure Of Contingencies [Abstract]. + References No definition available. + Details
Name: | teck_DisclosureOfContingenciesAbstract
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration