FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2014

FAIR VALUE MEASUREMENTS [Abstract]

Schedule of Investments Measured at Fair Value on Recurring Basis

	Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2013		Quote prices in active market for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Assets:
Foreign exchange forward contracts		43,160,093		-		43,160,093		-
Capped call options		107,223,601		-		-		107,223,601
Available-for-sale investment		30,117,797		-		-		30,117,797
Liabilities:
Foreign exchange forward contracts		10,080,395		-		10,080,395		-
Convertible senior notes		770,485,897		-		-		770,485,897

	Fair Value Measurements at Reporting Date Using
Description	Balance as of December 31, 2014		Quote prices in active market for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Assets:
Foreign exchange forward contracts		47,712,744		-		47,712,744		-
Capped call options		21,098,263		-		-		21,098,263
Available-for-sale investment		20,875,725		-		-		20,875,725
Liabilities:
Foreign exchange forward contracts		30,901,012		-		30,901,012		-
Convertible senior notes		1,540,398,645		-		-		1,540,398,645

Schedule of assumptions used in the valuation of financial instruments

	As of December 31,
	2013			2014
Fair value of ADS	US$	29.30		US$	19.71
Strike price	US$	33.75		US$	33.75
Risk free interest rate		0.53	%		0.44	%
Dividend yield		-			-
Standard Volatility		70.6	%		64.31	%

	As of December 31,
	2013		2014
Fair value of ADS		-	US$	19.71
Strike price		-	US$	45.83
Risk free interest rate		-		1.51	%
Dividend yield		-		-
Standard Volatility		-		66.31	%

	For the year-ended December 31
	2013			2014
Spot price		18.57			6.35
Conversion price		16.84			14.91
Risk free interest rate		0.82	%		0.348	%
Dividend yield		0.00	%		0.00	%
Expected share volatility		50.41	%		41.88	%
Time to maturity		2 years			1 year