Cover page - shares	3 Months Ended
	Oct. 03, 2020	Oct. 31, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 03, 2020
Document Transition Report	false
Entity File Number	000-22874
Entity Registrant Name	Viavi Solutions Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-2579683
Entity Address, Address Line One	6001 America Center Drive
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95002
City Area Code	408
Local Phone Number	404-3600
Title of 12(b) Security	Common Stock, par value of $0.001 per share
Trading Symbol	VIAV
Security Exchange Name	NASDAQ
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		228,993,740
Entity Central Index Key	0000912093
Amendment Flag	false
Current Fiscal Year End Date	--07-03
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1