Debt Instrument, Required Prepayment, Percentage Of Excess Cash Flow

No definition available.

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- Definition

Line Of Credit Facility, Maximum Borrowing Capacity, Maximum Number Of Days

+ References

No definition available.

+ Details

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Namespace Prefix:	cls_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility, accordion feature, increase limit, subject to certain conditions by obtaining additional commitments from existing and/or new lenders.

+ References

No definition available.

+ Details

Name:	cls_LineofCreditFacilityAccordionFeatureIncreaseLimit
Namespace Prefix:	cls_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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CREDIT FACILITIES - Narrative (Details) - Line of Credit $ in Thousands	1 Months Ended	5 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) business_day	May 31, 2024 USD ($)	Dec. 31, 2025 USD ($)
Minimum
Line of Credit Facility [Line Items]
Debt instrument, required prepayment, percentage of excess cash flow			0.00%
Maximum
Line of Credit Facility [Line Items]
Debt instrument, required prepayment, percentage of excess cash flow			50.00%
Secured Debt \| Term A Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 250,000
Debt instrument, periodic payment, principal	$ 3,125
Secured Debt \| Term A Loan \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.75%
Secured Debt \| Term A Loan \| Minimum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Secured Debt \| Term A Loan \| Minimum \| Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Secured Debt \| Term A Loan \| Maximum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Secured Debt \| Term A Loan \| Maximum \| Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Secured Debt \| Term B Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 500,000
Debt instrument, periodic payment, principal	$ 1,250
Secured Debt \| Term B Loan \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%		1.75%
Secured Debt \| Term B Loan \| Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.75%
Secured Debt \| Initial Term Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount		$ 350,000
Secured Debt \| Incremental Term Loan
Line of Credit Facility [Line Items]
Debt instrument, face amount		365,000
Revolving Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 750,000
Proceeds from long-term lines of credit		$ 600,000
Long-term debt			$ 0
Accordion feature, increase limit	$ 200
Revolving Facility \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.10%
Revolving Facility \| Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.30%
Revolving Facility \| Minimum \| Alternative Currency Daily Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Revolving Facility \| Minimum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Revolving Facility \| Minimum \| Alternative Currency Term Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Revolving Facility \| Minimum \| Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Revolving Facility \| Minimum \| Canadian Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Revolving Facility \| Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.45%
Revolving Facility \| Maximum \| Alternative Currency Daily Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving Facility \| Maximum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving Facility \| Maximum \| Alternative Currency Term Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving Facility \| Maximum \| Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Revolving Facility \| Maximum \| Canadian Prime Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Bridge Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 50,000
Line of credit facility, maximum borrowing capacity, maximum number of days \| business_day	10
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 150,000