Cash transferred.

No definition available.

Name:	aem_CashTransferredPerShare
Namespace Prefix:	aem_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Outstanding debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	aem_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of net smetler of share acquired

+ References

No definition available.

+ Details

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

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2020-01-01
-Paragraph B64
-Subparagraph f
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B
-URIDate 2020-01-01

+ Details

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

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

The amount of dividends proposed or declared after the reporting period but before financial statements are authorised for issue. Such dividends are not recognised as a liability at the end of the reporting period because no obligation exists at that time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 137
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_137_a&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 10
-IssueDate 2020-01-01
-Paragraph 13
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=10&code=ifrs-tx-2020-en-r&anchor=para_13&doctype=Standard
-URIDate 2020-01-01

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners.

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_CounterpartiesAxis=aem_TmacResourcesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=aem_MaverixMetalsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Millions	Feb. 11, 2021 USD ($) $ / shares	Feb. 02, 2021 USD ($) $ / shares	Feb. 02, 2021 USD ($)
SUBSEQUENT EVENTS
Dividend declared (in dollars per share) \| $ / shares	$ 0.35
Dividend declared	$ 84.9
TMAC Resources Inc [Member]
SUBSEQUENT EVENTS
Cash consideration		$ 226.0	$ 226.0
Cash transferred (per share) \| $ / shares		$ 2.20
Outstanding debt			$ 134.0
Percentage of net smetler of share acquired			1.50%
Maverix Metals Inc [Member]
SUBSEQUENT EVENTS
Cash consideration		$ 50.0	$ 50.0