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Critical Accounting Estimates and Judgments - Additional Information (Detail) CAD in Millions | 12 Months Ended
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Dec. 31, 2017 CAD
Disclosure of critical accounting estimates and judgments [line items] |
Increase in decommissioning and restoration provision for Teck Coal water quality management | CAD 244
Decommissioning and restoration provisions for Teck Coal water quality management | CAD 394
Nominal discount rate | 6.82%
Inflation rate | 2.00%
Top of range [member] |
Disclosure of critical accounting estimates and judgments [line items] |
Decommissioning and restoration provisions period | 100 years

X
- Definition Decommissioning and restoration provision period coal water management. + References No definition available. + Details
Name: | teck_DecommissioningAndRestorationProvisionPeriodCoalWaterManagement
Namespace Prefix: | teck_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Decommissioning and restoration provisions coal water management. + References No definition available. + Details
Name: | teck_DecommissioningAndRestorationProvisionsCoalWaterManagement
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure of critical accounting estimates and judgments [line items] + References No definition available. + Details
Name: | teck_DisclosureOfCriticalAccountingEstimatesAndJudgmentsLineItems
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in decommissioning and restoration provisions coal water management. + References No definition available. + Details
Name: | teck_IncreaseInDecommissioningAndRestorationProvisionsCoalWaterManagement
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Inflation rate decommissioning and restoration provision. + References No definition available. + Details
Name: | teck_InflationRateDecommissioningAndRestorationProvision
Namespace Prefix: | teck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal discount rate decommissioning and restoration provision coal water management. + References No definition available. + Details
Name: | teck_NominalDiscountRateDecommissioningAndRestorationProvisionCoalWaterManagement
Namespace Prefix: | teck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |