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

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