Plant and equipment - Additional information (Details) - USD ($)	Feb. 01, 2020	Jan. 31, 2020
Plant and equipment
Lease derecognition	$ 298,708	$ 127,224
Lease termination	$ 120,131	$ 84,459

The increase (decrease) in property, plant and equipment resulting from lease derecognition.

No definition available.

Name:	solo_LeaseDerecognitionPropertyPlantAndEquipment
Namespace Prefix:	solo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration