EARNINGS (LOSS) PER SHARE (Details) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
EARNINGS (LOSS) PER SHARE
Net income (loss)	$ 40,862	$ (207,882)	$ 103,704	$ (177,063)
Basic weighted-average number of common shares outstanding (000s) (in shares)	302,702,000	163,295,000	303,285,000	160,082,000
Dilutive potential common shares (000s):
Stock options and RSUs (in shares)	7,908,000		8,770,000
Convertible debt (in shares)	12,173,000		16,955,000
Diluted weighted-average number of common shares outstanding (000s) (in shares)	322,783,000	163,295,000	329,010,000	160,082,000
Basic earnings (loss) per share (in dollars per share)	$ 0.13	$ (1.27)	$ 0.34	$ (1.11)
Diluted earnings (loss) per share (in dollars per share)	$ 0.13	$ (1.27)	$ 0.32	$ (1.11)
Anti-dilutive shares not included in the computation of diluted earnings per share
Anti-dilutive stock options not included in the computation of diluted earnings per share (in shares)	285,000	1,018,000	259,000	1,787,000