Cover - USD ($) $ in Billions	12 Months Ended
	Jan. 02, 2021	Feb. 26, 2021	Jun. 27, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 02, 2021
Current Fiscal Year End Date	--01-02
Document Transition Report	false
Entity File Number	001-38257
Entity Registrant Name	National Vision Holdings, Inc.
Entity Central Index Key	0001710155
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-4841717
Entity Address, Address Line One	2435 Commerce Ave
Entity Address, Address Line Two	Building 2200
Entity Address, City or Town	Duluth
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30096
City Area Code	770
Local Phone Number	822‑3600
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	EYE
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 2.3
Entity Common Stock, Shares Outstanding		81,311,893
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement for its 2021 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K. The Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended January 2, 2021.