| Document and Entity Information | Sep. 29, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 29, 2020 |
| Entity Registrant Name | SYNNEX CORPORATION |
| Entity Central Index Key | 0001177394 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-31892 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 94-2703333 |
| Entity Address Address Line1 | 44201 Nobel Drive |
| Entity Address City Or Town | Fremont |
| Entity Address State Or Province | CA |
| Entity Address Postal Zip Code | 94538 |
| City Area Code | 510 |
| Local Phone Number | 656-3333 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of each class | Common Stock, par value $0.001 per share |
| Trading Symbol | SNX |
| Name of each exchange on which registered | NYSE |
