| Cover Page | Nov. 12, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Nov. 12, 2019 |
| Entity Registrant Name | Milacron Holdings Corp. |
| Entity Central Index Key | 0001637913 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37458 |
| Entity Tax Identification Number | 80-0798640 |
| Entity Address, Address Line One | 10200 Alliance Road, |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Cincinnati, |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 45242 |
| City Area Code | (513) |
| Local Phone Number | 487-5000 |
| Title of 12(b) Security | Common stock, $0.01 par value per share |
| Trading Symbol | MCRN |
| Security Exchange Name | NYSE |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
