| Cover | Jan. 29, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 29, 2025 |
| Entity File Number | 001-14832 |
| Entity Registrant Name | Celestica Inc. |
| Entity Central Index Key | 0001030894 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | A6 |
| Entity Address, Address Line One | 5140 Yonge Street |
| Entity Address, Address Line Two | Suite 1900 |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Country | CA |
| Entity Address, Postal Zip Code | M2N 6L7 |
| City Area Code | 416 |
| Local Phone Number | 448-5800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Shares without par value |
| Trading Symbol | CLS |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
