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INCOME TAXES - Domestic federal statutory tax rates (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income taxes:
Federal and provincial income tax rate (as a percent)	27.00%	27.00%	27.00%
Canada
Income taxes:
Federal and provincial income tax rate (as a percent)	26.50%
United States | Canadian Solar (USA) Inc.
Income taxes:
Income tax rate (as a percent)	25.00%	25.50%	24.60%
United States | Canadian Solar SSES (US) Inc
Income taxes:
Income tax rate (as a percent)	23.00%	28.10%
United States | Recurrent Energy Group Inc.
Income taxes:
Income tax rate (as a percent)	26.60%	26.10%	22.50%
United States | Canadian Solar US Module Manufacturing Corporation
Income taxes:
Income tax rate (as a percent)	21.00%

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- Definition

The domestic federal statutory tax rate and provincial corporate income tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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- Definition

Represents the corporate income tax rate in foreign jurisdiction.

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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.

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