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Assets Held for Sale - Additional Information (Detail) CAD in Millions | 12 Months Ended
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Dec. 31, 2017 CAD
Disclosure of assets held for sale [line items] |
Break fee paid for sale of asset | CAD 28
Waneta Dam [member] |
Disclosure of assets held for sale [line items] |
Percentage of sales interest in joint operation | 66.67%
Proceeds from joint operation | CAD 1,200
Lease period | 20-year
Additional lease period | 10 years
Break fee paid for sale of asset | CAD (28)

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- Definition Break fee paid for sale of asset. + References No definition available. + Details
Name: | teck_BreakFeePaidForSaleOfAsset
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Disclosure Of Assets Held For Sales + References No definition available. + Details
Name: | teck_DisclosureOfAssetsHeldForSaleLineItems
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease term extension period power agreement. + References No definition available. + Details
Name: | teck_LeaseTermExtensionPeriodPowerAgreement
Namespace Prefix: | teck_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease term power agreement. + References No definition available. + Details
Name: | teck_LeaseTermPowerAgreement
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of sales interest in joint operation. + References No definition available. + Details
Name: | teck_PercentageOfSalesInterestInJointOperation
Namespace Prefix: | teck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proceeds from sale of fixed assets in joint operation + References No definition available. + Details
Name: | teck_ProceedsFromSaleOfFixedAssetsInJointOperation
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | ifrs-full_JointOperationsAxis=teck_WanetaDamMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |