SHARE-BASED COMPENSATION (Details 2) (USD $)	9 Months Ended
	Dec. 31, 2011 Y
Stock options outstanding and exercisable by exercise price range
Options outstanding (in shares)	8,491,834
Options outstanding - Weighted-average remaining contractual life (in years)	4.03
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 21.09
Options exercisable (in shares)	7,889,944
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 21.65
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 the range (in dollars per share)	$ 3.69
Exercise price per share, high end of the range (in dollars per share)	$ 9.62
Options outstanding (in shares)	192,102
Options outstanding - Weighted-average remaining contractual life (in years)	5.01
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 8.68
Options exercisable (in shares)	128,102
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 8.56
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 the range (in dollars per share)	$ 10.22
Exercise price per share, high end of the range (in dollars per share)	$ 15.00
Options outstanding (in shares)	1,869,658
Options outstanding - Weighted-average remaining contractual life (in years)	5.30
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 12.87
Options exercisable (in shares)	1,391,028
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 12.57
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 the range (in dollars per share)	$ 15.10
Exercise price per share, high end of the range (in dollars per share)	$ 19.82
Options outstanding (in shares)	2,094,426
Options outstanding - Weighted-average remaining contractual life (in years)	4.01
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 16.64
Options exercisable (in shares)	2,055,166
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 16.62
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 the range (in dollars per share)	$ 20.12
Exercise price per share, high end of the range (in dollars per share)	$ 25.00
Options outstanding (in shares)	2,182,909
Options outstanding - Weighted-average remaining contractual life (in years)	4.42
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 22.94
Options exercisable (in shares)	2,162,909
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 the range (in dollars per share)	$ 25.98
Exercise price per share, high end of the range (in dollars per share)	$ 29.30
Options outstanding (in shares)	1,160,510
Options outstanding - Weighted-average remaining contractual life (in years)	2.58
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 26.69
Options exercisable (in shares)	1,160,510
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 the range (in dollars per share)	$ 30.93
Exercise price per share, high end of the range (in dollars per share)	$ 39.12
Options outstanding (in shares)	744,134
Options outstanding - Weighted-average remaining contractual life (in years)	2.24
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 35.71
Options exercisable (in shares)	744,134
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 35.71
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 the range (in dollars per share)	$ 40.50
Exercise price per share, high end of the range (in dollars per share)	$ 62.06
Options outstanding (in shares)	248,095
Options outstanding - Weighted-average remaining contractual life (in years)	2.75
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 44.08
Options exercisable (in shares)	248,095
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 44.08