Document And Entity Information - shares	4 Months Ended
	Sep. 30, 2020	Nov. 16, 2020
Document Information Line Items
Entity Registrant Name	Northern Genesis Acquisition Corp.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		39,931,680
Amendment Flag	false
Entity Central Index Key	0001815495
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Entity File Number	001-39451
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes
Document Transition Report	false