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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

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- Definition

Disclosure of critical accounting estimates and judgments [line items]

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No definition available.

+ Details

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- Definition

Transition adjustment IFRS15 pre tax adjustment to retained earnings.

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No definition available.

+ Details

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Namespace Prefix:	teck_
Data Type:	xbrli:monetaryItemType
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- Details

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Namespace Prefix:
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Period Type: