Name:	aem_IfrsPurchaseObligation
Namespace Prefix:	aem_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The percentage of net smelter returns subject to royalty arrangements.

No definition available.

Name:	aem_PercentageOnNetSmelterReturns
Namespace Prefix:	aem_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The period of royalty payments after the commencement of operations.

No definition available.

Name:	aem_PeriodOfRoyaltyPaymentsCommencement
Namespace Prefix:	aem_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The royalty percentage the Company is committed to pay to in a royalty arrangement for the property.

No definition available.

Name:	aem_RoyaltiesPercentage
Namespace Prefix:	aem_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The amount of future capital expenditures that the entity is committed to make.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_CapitalCommitments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

No definition available.

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

The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2020-01-01
-Paragraph 86
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2020-01-01