EARNINGS (LOSS) PER SHARE (Details 2)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Anti-dilutive shares not included in the computation of diluted earnings per share [Line Items]
Basic weighted-average number of common shares outstanding	335,400,000	321,000,000	305,400,000
Diluted weighted-average number of common shares outstanding		327,500,000	313,100,000
Dilutive effect of stock options and RSUs
Anti-dilutive shares not included in the computation of diluted earnings per share [Line Items]
Dilutive effect of stock options, RSUs and convertible notes		6,500,000	7,200,000
Dilutive effect of convertible notes
Anti-dilutive shares not included in the computation of diluted earnings per share [Line Items]
Dilutive effect of stock options, RSUs and convertible notes		0	500,000
Dilutive effect of stock options
Anti-dilutive shares not included in the computation of diluted earnings per share [Line Items]
Dilutive effect of stock options, RSUs and convertible notes	877,000	1,090,000	1,093,000