(LOSS) EARNINGS PER SHARE (Details 2)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Anti-dilutive shares not included in the computation of diluted earnings per share
Basic weighted-average number of common shares outstanding (000s)	305,446,000	304,655,000	195,808,000
Potential diluted weighted-average number of common shares outstanding (000s)	313,124,000		205,529,000
Dilutive effect of stock options
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	1,093,000	271,000	1,465,000
Dilutive effect of stock options and RSUs
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	7,158,000		2,774,000
Dilutive effect of Convertible Notes
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	520,000		6,947,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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+ Details