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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