| Cover page Cover page | Aug. 11, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 11, 2020 |
| Entity Incorporation, State or Country Code | DE |
| Entity Registrant Name | VIAVI SOLUTIONS INC. |
| Entity File Number | 000-22874 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0000912093 |
