| Document And Entity Information | Jan. 23, 2020 |
| Document Information [Line Items] | |
| Entity, Registrant Name | AVX Corporation |
| Document, Type | 8-K |
| Document, Period End Date | Jan. 23, 2020 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 1-7201 |
| Entity, Tax Identification Number | 33-0379007 |
| Entity, Address, Address Line One | 1 AVX Boulevard |
| Entity, Address, City or Town | Fountain Inn |
| Entity, Address, State or Province | SC |
| Entity, Address, Postal Zip Code | 29644 |
| City Area Code | 864 |
| Local Phone Number | 967-2150 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | AVX |
| Security Exchange Name | NYSE |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000859163 |
