Goodwill (Details) - Goodwill - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill, beginning balance	$ 1,108	$ 1,118
Changes in foreign exchange rates	36	(10)
Sale of steelmaking coal business	(702)
Intangible assets and goodwill, ending balance	442	1,108
Steelmaking Coal Business
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill, beginning balance	702	702
Changes in foreign exchange rates	0	0
Sale of steelmaking coal business	(702)
Intangible assets and goodwill, ending balance	0	702
Quebrada Blanca
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill, beginning balance	406	416
Changes in foreign exchange rates	36	(10)
Sale of steelmaking coal business	0
Intangible assets and goodwill, ending balance	$ 442	$ 406

No definition available.

Name:	ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2024-01-01
-Paragraph 118
-Subparagraph e
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DisposalsIntangibleAssetsAndGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2024-01-01
-Paragraph 118
-Subparagraph e
-Clause vii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IntangibleAssetsAndGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_GoodwillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=teck_SteelmakingCoalBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis=teck_QuebradaBlancaSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: