XML 141 R107.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Income Taxes - Additional Information (Detail) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 CAD ($) | Dec. 31, 2017 CAD ($) | Dec. 31, 2018 USD ($)
Disclosure of Income Taxes [line items] |  |  |
Unrecognized deferred tax liabilities | $ 745 | $ 694 |
Unused tax losses | $ 2,910 | 3,630 |
Loss carryforwards expiration, start year | 2029 |  |
Loss carryforwards expiration, end year | 2038 |  |
Cumulative Canadian development expenses | $ 685 | 981 |
Development expenses deductible percentage | 30.00% |  |
Federal investment tax credits | $ 106 | 104 |
Investment tax credits, start year | 2022 |  |
Investment tax credits, end year | 2038 |  |
Antamina [member] |  |  |
Disclosure of Income Taxes [line items] |  |  |
Ownership interest in joint operation | 22.50% |  |
2013 [member] | Antamina [member] |  |  |
Disclosure of Income Taxes [line items] |  |  |
Current tax debt, including interest and penalties | $ 40 |  | $ 30
Charge to earnings consisting of interest and penalties | 20 |  | 15
2013, 2014, and 2015 [member] | Antamina [member] |  |  |
Disclosure of Income Taxes [line items] |  |  |
Current tax debt, including interest and penalties | 125 |  | 94
Charge to earnings consisting of interest and penalties | 60 |  | $ 45
Unused Tax Credits [member] |  |  |
Disclosure of Income Taxes [line items] |  |  |
Unrecognized deferred tax assets | $ 239 | $ 231 |

X
- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_21_a_iv&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cumulative development expenses. + References No definition available. + Details
Name: | teck_CumulativeDevelopmentExpenses
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Current tax debt payable. + References No definition available. + Details
Name: | teck_CurrentTaxDebtPayable
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred tax assets loss carryforwards expiration year end. + References No definition available. + Details
Name: | teck_DeferredTaxAssetsLossCarryforwardsExpirationYearEnd
Namespace Prefix: | teck_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred tax assets loss carryforwards expiration year start. + References No definition available. + Details
Name: | teck_DeferredTaxAssetsLossCarryforwardsExpirationYearStart
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in income taxes. + References No definition available. + Details
Name: | teck_DisclosureOfIncomeTaxesLineItems
Namespace Prefix: | teck_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment tax credit. + References No definition available. + Details
Name: | teck_InvestmentTaxCredit
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Investment tax credits expiration year end. + References No definition available. + Details
Name: | teck_InvestmentTaxCreditsExpirationYearEnd
Namespace Prefix: | teck_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment tax credits expiration year start. + References No definition available. + Details
Name: | teck_InvestmentTaxCreditsExpirationYearStart
Namespace Prefix: | teck_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net operating loss carryforwards. + References No definition available. + Details
Name: | teck_NetOperatingLossCarryforwards
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Potential tax benefit percentage. + References No definition available. + Details
Name: | teck_PotentialTaxBenefitPercentage
Namespace Prefix: | teck_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax related interest and penalties assessed. + References No definition available. + Details
Name: | teck_TaxRelatedInterestAndPenaltiesAssessed
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unrecognized deferred tax assets. + References No definition available. + Details
Name: | teck_UnrecognizedDeferredTaxAssets
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unrecognized deferred tax liabilities. + References No definition available. + Details
Name: | teck_UnrecognizedDeferredTaxLiabilities
Namespace Prefix: | teck_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | teck_TaxAssessmentPeriodAxis=teck_TwoThousandAndThirteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | teck_TaxAssessmentPeriodAxis=teck_TwoThousandAndThirteenFourteenAndFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis=ifrs-full_UnusedTaxCreditsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |