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Legal (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Aug. 31, 2025	Sep. 30, 2025
Legal [Abstract]
Outstanding invoices		$ 1.6
Vendor invoices		$ 0.2
Vendor settled obligation	$ 0.2

X

- References

No definition available.

+ Details

Name:	inmb_LegalAbstract
Namespace Prefix:	inmb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Outstanding invoices.

+ References

No definition available.

+ Details

Name:	inmb_OutstandingInvoices
Namespace Prefix:	inmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the amount of recorded invoices.

+ References

No definition available.

+ Details

Name:	inmb_VendorInvoices
Namespace Prefix:	inmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of decrease in obligation for supplier finance program from settlement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 405
-SubTopic 50
-Name Accounting Standards Codification
-Section 55
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477128/405-50-55-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479468/405-50-50-3

+ Details

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