XML 91 R78.htm IDEA: XBRL DOCUMENT v3.22.4

INCOME TAXES - Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Deferred Tax Asset, Valuation Allowance [Roll Forward]
Beginning balance	$ 315,645	$ 334,845	$ 309,962
Additions (reductions) charged to income tax provision, net	1,929	1,023	(2,707)
Additions due to acquisitions	0	7,747	0
Reductions due to divestitures, restructuring	(5,337)	(4,706)	0
Currency translation and other	(17,484)	(23,264)	27,590
Ending balance	$ 294,753	$ 315,645	$ 334,845

X

- Definition

Deferred Tax Asset, Valuation Allowance, Additions (Deductions) for Income Tax Expense (Benefit)

+ References

No definition available.

+ Details

Name:	crl_DeferredTaxAssetValuationAllowanceAdditionsDeductionsForIncomeTaxExpenseBenefit
Namespace Prefix:	crl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Deferred Tax Asset, Valuation Allowance, Additions For Acquisitions

+ References

No definition available.

+ Details

Name:	crl_DeferredTaxAssetValuationAllowanceAdditionsForAcquisitions
Namespace Prefix:	crl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Deferred Tax Asset, Valuation Allowance, Additions (Reductions) For Currency Translation and Other

+ References

No definition available.

+ Details

Name:	crl_DeferredTaxAssetValuationAllowanceAdditionsReductionsForCurrencyTranslationAndOther
Namespace Prefix:	crl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Deferred Tax Asset, Valuation Allowance, Reductions For Disposals, Restructuring

+ References

No definition available.

+ Details

Name:	crl_DeferredTaxAssetValuationAllowanceReductionsForDisposalsRestructuring
Namespace Prefix:	crl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Deferred Tax Asset, Valuation Allowance

+ References

No definition available.

+ Details

Name:	crl_DeferredTaxAssetValuationAllowanceRollForward
Namespace Prefix:	crl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

+ Details

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