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Organization and Description of Business (Details)	Aug. 22, 2024
Suspended status | ClearSign Asia Limited
Organization and Description of Business
Suspended status, period	3 years

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- 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

No definition available.

+ Details

Name:	clir_OrganizationAndDescriptionOfBusinessLineItems
Namespace Prefix:	clir_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Represents period for suspended status, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	clir_SuspendedStatusPeriod
Namespace Prefix:	clir_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfByMeansOtherThanSaleNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=clir_ClearsignAsiaLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: