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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Property, plant and equipment (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021
Buildings
Property, plant and equipment
Estimated useful lives		20 years
Machinery | Minimum
Property, plant and equipment
Estimated useful lives		5 years
Machinery | Maximum
Property, plant and equipment
Estimated useful lives		10 years
Furniture, fixtures and equipment
Property, plant and equipment
Estimated useful lives		5 years
Motor vehicles
Property, plant and equipment
Estimated useful lives		5 years
Solar power systems | Depreciation life
Property, plant and equipment
Estimated useful lives	30 years
Maximum useful life of transferred to an offtaker	30 years
Increase or decrease in depreciation expenses			$ 2,186
Solar power systems | Minimum | Depreciation life
Property, plant and equipment
Estimated useful lives	20 years
Solar power systems | Maximum | Depreciation life
Property, plant and equipment
Estimated useful lives	25 years

X

- Definition

The amount of increase Decrease in Depreciation Expense .

+ References

No definition available.

+ Details

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Namespace Prefix:	csiq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the maximum useful life of project to be transferred to an offtaker.

+ References

No definition available.

+ Details

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X

- 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

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X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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Balance Type:
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X

- Details

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X

- Details

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X

- Details

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X

- Details

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X

- Details

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X

- Details

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