| Cover | Oct. 01, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 1, 2021 |
| Entity File Number | 000-56021 |
| Entity Registrant Name | ACREAGE HOLDINGS, INC. |
| Entity Central Index Key | 0001762359 |
| Entity Tax Identification Number | 98-1463868 |
| Entity Incorporation, State or Country Code | A1 |
| Entity Address, Address Line One | 450 LEXINGTON AVENUE, #3308 |
| Entity Address, City or Town | NEW YORK |
| Entity Address, State or Province | NY |
| Entity Address, Country | US |
| Entity Address, Postal Zip Code | 10163 |
| City Area Code | 646 |
| Local Phone Number | 600-9181 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Class E Subordinate Voting Shares | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class E subordinate voting shares |
| Trading Symbol | ACRHF |
| Class D Subordinate Voting Shares | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class D subordinate voting shares |
| Trading Symbol | ACRDF |
