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NON-CONTROLLING INTERESTS - Additional Information (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 09, 2023 | Dec. 31, 2021 | Jun. 08, 2023
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs | [1] |  | $ 148,510,000 |
Equity (Deficits) Attribute to Canadian Solar Inc. |  |  |  |
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs | [1] |  | $ 148,510,000 |
CSI Solar |  |  |  |
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs |  | $ 927,897 |  |
Noncontrolling interest ownership percentage |  | 62.24% |  |
Ownership percentage by non-controlling owners |  | 37.76% |  | 20.41%
CSI Solar | Non-Controlling Interest |  |  |  |
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs |  | $ 644,873 |  |
CSI Solar | Additional Paid-in Capital |  |  |  |
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs |  | 244,629 |  |
CSI Solar | Accumulated Other Comprehensive Income |  |  |  |
NON-CONTROLLING INTERESTS |  |  |  |
Issuance of ordinary shares, net of issuance costs |  | $ 38,395 |  |
[1] | Represented proceeds from “at-the-market” offering of 3,639,918 shares of common shares in 2021, net of commissions and offering expenses of $1,490.

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