XML 102 R73.htm IDEA: XBRL DOCUMENT v3.22.0.1

Credit Facilities and Lease Obligations - Maturity Schedule (Details) - USD ($)		1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 27, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings				$ 0
Initial Term Loan
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings	$ 47,000,000.0	$ 1,500,000	$ 875,000		$ 875,000
Initial Term Loan | Cost
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					295,400,000
Initial Term Loan | Cost | 2022
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					0
Initial Term Loan | Cost | 2023
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					0
Initial Term Loan | Cost | 2024
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					0
Initial Term Loan | Cost | 2025
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					295,400,000
Initial Term Loan | Cost | 2026
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					0
Second Incremental Term Loan | Cost
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					365,000,000.0
Second Incremental Term Loan | Cost | 2022
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					18,250,000
Second Incremental Term Loan | Cost | 2023
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					18,250,000
Second Incremental Term Loan | Cost | 2024
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					18,250,000
Second Incremental Term Loan | Cost | 2025
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					18,250,000
Second Incremental Term Loan | Cost | 2026
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					292,000,000.0
Second Incremental Term Loan | Cost | Thereafter
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings					$ 0

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_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cls_InitialTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cls_SecondIncrementalTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: