The number of units converted into shares of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_PartnersCapitalAccountUnitsConverted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Common Stock Reserved For Issuance - Additional Information (Details) - $ / shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
VX3 \| Common Stock
Class Of Stock [Line Items]
Limited partnership interests exchanged	1,318,797
Vaccinex Products LP \| Common Stock
Class Of Stock [Line Items]
Limited partnership interests exchanged	1,147,259	18,565