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REPORTING ENTITY	12 Months Ended
	Dec. 31, 2024
Accounting Changes and Error Corrections [Abstract]
REPORTING ENTITY	REPORTING ENTITY: Celestica Inc. (referred to herein as Celestica, the Company, we, us, or our) is incorporated in Ontario with its corporate headquarters located in Toronto, Ontario, Canada. Celestica’s subordinate voting shares (SVS) were re-designated as common shares (Common Shares) effective April 25, 2024 (see note 12), and are listed as such on the Toronto Stock Exchange (TSX) and the New York Stock Exchange (NYSE). We refer to our common equity as Common Shares for all periods presented herein. Our operating and reportable segments consist of our Advanced Technology Solutions (ATS) segment and our Connectivity & Cloud Solutions (CCS) segment. See note 22 for further detail regarding segment information.

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The entire disclosure for reporting change in reporting entity.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482989/270-10-45-12

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