XML 208 R61.htm IDEA: XBRL DOCUMENT v3.25.3

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Indefinite Lived Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
	Jun. 01, 2025	Aug. 31, 2025	Aug. 31, 2024
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Indefinite-lived intangible assets acquired	$ 57,900	$ 57,963	$ 57,681
Trade names | Tensar
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Indefinite-lived intangible assets acquired		54,813	54,531
In-process research and development | Tensar
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Indefinite-lived intangible assets acquired		2,400	2,400
Non-compete agreements | Tensar
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Indefinite-lived intangible assets acquired		$ 750	$ 750

X

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-1

+ Details

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

X

- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

+ Details

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

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=cmc_TensarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=cmc_NonCompeteAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: