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Financial Instruments and Financial Risk Management - Summary of Provisionally Valued Outstanding Receivable And Payable Positions (Detail) lb in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 USD_per_Pound lb | Dec. 31, 2017 USD_per_Pound lb
Copper [member] |  |
Disclosure of fair value of settlement receivables and payables [line items] |  |
Outstanding receivable | 93 | 138
Commodity price | USD_per_Pound | 2.70 | 3.26
Zinc [member] |  |
Disclosure of fair value of settlement receivables and payables [line items] |  |
Outstanding receivable | 208 | 197
Outstanding payable | 77 | 97
Commodity price | USD_per_Pound | 1.12 | 1.50
Lead [member] |  |
Disclosure of fair value of settlement receivables and payables [line items] |  |
Outstanding receivable | 24 | 44
Outstanding payable | 16 | 30
Commodity price | USD_per_Pound | 0.91 | 1.13

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- Definition Commodity price. + References No definition available. + Details
Name: | teck_CommodityPrice
Namespace Prefix: | teck_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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- Definition Disclosure of fair value of settlement receivables and payables [line items]. + References No definition available. + Details
Name: | teck_DisclosureOfFairValueOfSettlementReceivablesAndPayablesLineItems
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Payable position provisionally valued in pounds. + References No definition available. + Details
Name: | teck_PayablePositionProvisionallyValuedInPounds
Namespace Prefix: | teck_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

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- Definition Receivable position provisionally valued in pounds. + References No definition available. + Details
Name: | teck_ReceivablePositionProvisionallyValuedInPounds
Namespace Prefix: | teck_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ProductsAndServicesAxis=teck_CopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ProductsAndServicesAxis=teck_ZincMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ProductsAndServicesAxis=teck_LeadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |