| Document and Entity Information | Jun. 17, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jun. 17, 2024 |
| Entity File Number | 001-41545 |
| Entity Registrant Name | MasterBrand, Inc. |
| Entity Central Index Key | 0001941365 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 88-3479920 |
| Entity Address, Address Line One | 3300 Enterprise Parkway |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Beachwood |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 44122 |
| City Area Code | 877 |
| Local Phone Number | 622-4782 |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | MBC |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
