XML 104 R70.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Areas of Judgment and Estimation Uncertainty - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($)
Transition to IFRS Fifteen [member] |
Disclosure of critical accounting estimates and judgments [line items] |
Pre-tax adjustment to retained earnings | $ 755

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 Transition adjustment IFRS15 pre tax adjustment to retained earnings. + References No definition available. + Details
Name: | teck_TransitionAdjustmentIFRS15PreTaxAdjustmentToRetainedEarnings
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_InitiallyAppliedIFRSsAxis=teck_TransitionToIFRS15Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |