Significant Accounting Policies - Additional information (Detail)	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Percentage of voting interest acquired	20.00%

Ownership interest for which equity accounting is applied.

No definition available.

Name:	eqx_OwnershipInterestForWhichEquityAccountingIsApplied
Namespace Prefix:	eqx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant