Contract modification related party.

No definition available.

Name:	CETX_ContractModificationRelatedParty
Namespace Prefix:	CETX_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Expected credit losses on receivables.

+ References

No definition available.

+ Details

Name:	CETX_ExpectedCreditLossesOnReceivables
Namespace Prefix:	CETX_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Royalty monthly payment.

+ References

No definition available.

+ Details

Name:	CETX_RoyaltyMonthlyPayment
Namespace Prefix:	CETX_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount paid to music publishers, record producers, songwriters, or other artists in advance of their earning royalties from record or music sales. Such an amount is based on contractual terms and is generally nonrefundable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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+ Details

Name:	us-gaap_AdvanceRoyalties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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

- Definition

Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-1

+ Details

Name:	us-gaap_OtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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
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+ Details

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

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=CETX_CXRIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=CETX_CemtrexXRIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_ServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_TitleOfIndividualAxis=CETX_SaagarGovilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardDateAxis=CETX_FirstYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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RELATED PARTY TRANSACTIONS (Details Narrative) - USD ($)				3 Months Ended	9 Months Ended
	Jan. 01, 2026	Jan. 06, 2025	Jan. 01, 2025	Dec. 31, 2024	Jun. 30, 2026	Jun. 30, 2025	Sep. 30, 2025
Related Party Transaction [Line Items]
Contract modification - related party				$ 280,545		$ 280,545
CXR Inc [Member]
Related Party Transaction [Line Items]
Royalties receivable					436,453
Cemtrex XR, Inc. [Member]
Related Party Transaction [Line Items]
Royalties receivable					448,221
Other receivables					172,450
Expected credit losses on receivables							$ 110,000
Allowance for expected credit losses					275,771
Cemtrex XR, Inc. [Member] \| Service [Member]
Related Party Transaction [Line Items]
Other receivables					$ 264,003
Saagar Govil [Member]
Related Party Transaction [Line Items]
Royalty		$ 820,000
Saagar Govil [Member] \| First Year [Member]
Related Party Transaction [Line Items]
Monthly payment			$ 10,000
Saagar Govil [Member] \| Second Year [Member]
Related Party Transaction [Line Items]
Monthly payment	$ 20,000