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Represents the corporate income tax rate in foreign jurisdiction.

No definition available.

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Data Type:	dtr-types:percentItemType
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The number of board of investment certificates for tax exemption.

No definition available.

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Data Type:	xbrli:integerItemType
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Represents adjustments related to status of limitations expirations.

No definition available.

Name:	csiq_UnrecognizedTaxStatueOfLimitationsExpirations
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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.

No definition available.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15

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Period Type:	instant

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Data Type:	na
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Name:	us-gaap_IncomeTaxAuthorityAxis=country_US
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Data Type:	na
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Data Type:	na
Balance Type:
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Name:	dei_LegalEntityAxis=csiq_CanadianSolarUSAIncMember
Namespace Prefix:
Data Type:	na
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Name:	dei_LegalEntityAxis=csiq_CanadianSolarSsesUsIncMember
Namespace Prefix:
Data Type:	na
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Name:	dei_LegalEntityAxis=csiq_RecurrentEnergyGroupInc.Member
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Data Type:	na
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Data Type:	na
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Data Type:	na
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Data Type:	na
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Data Type:	na
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