| Document and Entity Information | Apr. 07, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | Canopy Growth Corp |
| Entity Tax Identification Number | 00-0000000 |
| Amendment Flag | false |
| Entity Central Index Key | 0001737927 |
| Document Type | 8-K |
| Document Period End Date | Apr. 7, 2021 |
| Entity Incorporation State Country Code | Z4 |
| Entity File Number | 001-38496 |
| Entity Address, Address Line One | 1 Hershey Drive |
| Entity Address, City or Town | Smiths Falls |
| Entity Address, State or Province | ON |
| Entity Address, Postal Zip Code | K7A 0A8 |
| City Area Code | (855) |
| Local Phone Number | 558-9333 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Shares, no par value |
| Trading Symbol | CGC |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
