STOCK-BASED COMPENSATION PLANS (Details 3) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Shares
Exercised (in shares)	(213,534)	(11,235)
Stock options
Shares
Stock options Outstanding at the beginning of the period (in shares)	9,692,499	11,503,869
Granted (in shares)	5,901,108
Exercised (in shares)	(208,587)	(1,200)
Forfeited (in shares)	(70,811)	(140,042)
Expired (in shares)	(1,759)	(499,088)
Stock options Outstanding at the end of the period (in shares)	15,312,450	10,863,539
Weighted Average Exercise Price
Stock options Outstanding at the beginning of the period (in dollars per share)	13.59	15.65
Granted (in dollars per share)	19.24
Exercised (in dollars per share)	14.19	14.17
Forfeited (in dollars per share)	15.28	14.78
Expired (in dollars per share)	14.17	46.39
Stock options Outstanding at the end of the period (in dollars per share)	15.75	13.66