Short Term Bank Loan [Line Items].

No definition available.

Name:	cik0000183782_ShortTermBankLoanLineItems
Namespace Prefix:	cik0000183782_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	cik0000183782_WorkingCapitalPeriod
Namespace Prefix:	cik0000183782_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Total interest costs incurred during the period and either capitalized or charged against earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483013/835-20-50-1

+ Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=cik0000183782_ChangzhouZhongjinMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Short-Term Bank Loan (Details) ¥ in Millions		12 Months Ended
Short-Term Bank Loan (Details) ¥ in Millions	Sep. 28, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 28, 2023 CNY (¥)
Short Term Bank Loan [Line Items]
Loan agreement	$ 4,113,000				¥ 30.0
Working capital period	1 year
Incurred interest expenses		$ 5,319		$ 68,777
Changzhou Zhongjin [Member]
Short Term Bank Loan [Line Items]
Fixed interest rate	2.90%				2.90%