| Cover | Nov. 03, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 3, 2020 |
| Entity File Number | 001-38496 |
| Entity Registrant Name | Canopy Growth Corporation |
| Entity Central Index Key | 0001737927 |
| Entity Incorporation, State or Country Code | Z4 |
| 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 |
| Title of 12(b) Security | Common Shares, no par value |
| Trading Symbol | CGC |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Information, Former Legal or Registered Name | Not Applicable |
