SHARE-BASED COMPENSATION (Details 2) (USD $)	3 Months Ended
	Jun. 30, 2012 Y
Stock options outstanding and exercisable by exercise price range
Options outstanding (in shares)	8,615,296
Options outstanding - Weighted-average remaining contractual life (in years)	4.36
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 20.57
Options exercisable (in shares)	7,285,698
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 21.87
Range of exercise price per share from $3.69 to $9.62
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 3.69
Exercise price per share, high end of range (in dollars per share)	$ 9.62
Options outstanding (in shares)	114,595
Options outstanding - Weighted-average remaining contractual life (in years)	5.77
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 8.65
Options exercisable (in shares)	87,595
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 8.57
Range of exercise price per share from $10.22 to $15.00
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 10.22
Exercise price per share, high end of range (in dollars per share)	$ 15.00
Options outstanding (in shares)	2,500,397
Options outstanding - Weighted-average remaining contractual life (in years)	6.96
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 12.99
Options exercisable (in shares)	1,220,943
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 12.44
Range of exercise price per share from $15.10 to $19.82
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 15.10
Exercise price per share, high end of range (in dollars per share)	$ 19.82
Options outstanding (in shares)	1,875,920
Options outstanding - Weighted-average remaining contractual life (in years)	3.81
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 16.68
Options exercisable (in shares)	1,852,776
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 16.67
Range of exercise price per share from $20.12 to $25.00
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 20.12
Exercise price per share, high end of range (in dollars per share)	$ 25.00
Options outstanding (in shares)	2,106,717
Options outstanding - Weighted-average remaining contractual life (in years)	3.84
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 22.92
Options exercisable (in shares)	2,106,717
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 22.92
Range of exercise price per share from $25.98 to $29.30
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 25.98
Exercise price per share, high end of range (in dollars per share)	$ 29.30
Options outstanding (in shares)	1,102,201
Options outstanding - Weighted-average remaining contractual life (in years)	2.19
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 26.69
Options exercisable (in shares)	1,102,201
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 26.69
Range of exercise price per share from $30.93 to $39.12
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 30.93
Exercise price per share, high end of range (in dollars per share)	$ 39.12
Options outstanding (in shares)	673,924
Options outstanding - Weighted-average remaining contractual life (in years)	1.95
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 35.81
Options exercisable (in shares)	673,924
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 35.81
Range of exercise price per share from $40.50 to $62.06
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	$ 40.50
Exercise price per share, high end of range (in dollars per share)	$ 62.06
Options outstanding (in shares)	241,542
Options outstanding - Weighted-average remaining contractual life (in years)	2.3
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 44.09
Options exercisable (in shares)	241,542
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 44.09