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SEGMENT INFORMATION (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues generated from each product |  |  |
Total net revenues | $ 2,960,626,610 us-gaap_SalesRevenueNet | $ 1,654,356,064 us-gaap_SalesRevenueNet | $ 1,294,829,413 us-gaap_SalesRevenueNet
Solar power products |  |  |
Revenues generated from each product |  |  |
Total net revenues | 1,550,386,288 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProductsMember | 1,143,246,845 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProductsMember | 1,132,767,404 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProductsMember
Solar system kits |  |  |
Revenues generated from each product |  |  |
Total net revenues | 104,214,589 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarSystemKitsProductMember | 149,767,825 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarSystemKitsProductMember | 92,624,999 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarSystemKitsProductMember
Solar power projects |  |  |
Revenues generated from each product |  |  |
Total net revenues | 891,919,632 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProjectsConstructionAndSaleMember | 292,024,142 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProjectsConstructionAndSaleMember | 55,050,856 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_SolarPowerProjectsConstructionAndSaleMember
EPC services |  |  |
Revenues generated from each product |  |  |
Total net revenues | 316,571,793 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_EPCServiceProductMember | 29,878,653 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_EPCServiceProductMember | 658,927 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_EPCServiceProductMember
Electricity |  |  |
Revenues generated from each product |  |  |
Total net revenues | 2,863,053 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_ElectricityIncomeMember | 1,326,761 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_ElectricityIncomeMember | 117,938 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_ElectricityIncomeMember
O&M services |  |  |
Revenues generated from each product |  |  |
Total net revenues | 1,544,164 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OAndMServicesProductMember | 1,024,340 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OAndMServicesProductMember | 529,082 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OAndMServicesProductMember
Others |  |  |
Revenues generated from each product |  |  |
Total net revenues | $ 93,127,091 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OtherProductMember | $ 37,087,498 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OtherProductMember | $ 13,080,207 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = csiq_OtherProductMember

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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