XML 140 R113.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Financial Instruments and Risk Management - Equity Price Risk (Details) shares in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 29, 2024 USD ($) shares | Sep. 30, 2023 USD ($) shares | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 15, 2022 shares
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |  |  |
Interest rate swap derivative |  |  | $ 15,800,000 | $ 18,900,000 |
TRS |  |  |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |  |  |
Length of extension |  |  | 1 year |  |
Interest rate swap derivative |  |  | $ 40,600,000 |  |
SVS | TRS |  |  |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |  |  |
Notion amount (in shares) | shares |  |  |  |  | 3,000
Increase (decrease) to notional amount (in shares) | shares |  | 500 |  |  |
Proceeds from termination of agreement |  | $ 5,000,000.0 |  |  |
SVS | Termination of Agreement | TRS |  |  |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |  |  |
Increase (decrease) to notional amount (in shares) | shares | 1,250 |  |  |  |
Proceeds from termination of agreement | $ 32,300,000 |  |  |  |
SVS | Equity price risk | TRS |  |  |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |  |  |
Weighted average exchange rate in U.S. dollars (in dollars per share) |  |  | 12.73 |  |

X
- Definition Hedging Instrument, Agreement, Length Of Extension + References No definition available. + Details
Name: | cls_HedgingInstrumentAgreementLengthOfExtension
Namespace Prefix: | cls_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Hedging Instrument, Proceeds From Termination + References No definition available. + Details
Name: | cls_HedgingInstrumentProceedsFromTermination
Namespace Prefix: | cls_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) To Notional Amount + References No definition available. + Details
Name: | cls_IncreaseDecreaseToNotionalAmount
Namespace Prefix: | cls_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Notional Amount, Shares + References No definition available. + Details
Name: | cls_NotionalAmountShares
Namespace Prefix: | cls_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The average price of a hedging instrument. [Refer: Hedging instruments [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 23B -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_23B_b&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_AveragePriceOfHedgingInstrument
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of current derivative financial assets. [Refer: Derivative financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_CurrentDerivativeFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=cls_TRSAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=cls_SubordinateVotingSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=cls_TerminationOfAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_EquityPriceRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |