SHARE-BASED COMPENSATION (Details 2) (USD $)	3 Months Ended
	Jun. 30, 2011
Stock options outstanding and exercisable by exercise price range
Options outstanding (in shares)	9,178,559
Options outstanding - Weighted-average remaining contractual life (in years)	4.28
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 20.76
Options exercisable (in shares)	8,620,882
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 21.18
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)	320,888
Options outstanding - Weighted-average remaining contractual life (in years)	5.60
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 8.70
Options exercisable (in shares)	210,388
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 8.59
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)	2,056,151
Options outstanding - Weighted-average remaining contractual life (in years)	4.91
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 12.56
Options exercisable (in shares)	1,779,546
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 12.38
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)	2,260,936
Options outstanding - Weighted-average remaining contractual life (in years)	4.43
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 16.62
Options exercisable (in shares)	2,130,364
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 16.60
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)	2,195,274
Options outstanding - Weighted-average remaining contractual life (in years)	4.95
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 22.94
Options exercisable (in shares)	2,155,274
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 22.90
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)	1,331,469
Options outstanding - Weighted-average remaining contractual life (in years)	2.72
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 26.81
Options exercisable (in shares)	1,331,469
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 26.81
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)	761,236
Options outstanding - Weighted-average remaining contractual life (in years)	2.71
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 35.70
Options exercisable (in shares)	761,236
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 35.70
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)	252,605
Options outstanding - Weighted-average remaining contractual life (in years)	3.22
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 44.11
Options exercisable (in shares)	252,605
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 44.11