STOCK-BASED COMPENSATION (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified					12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009	Mar. 31, 2008	Mar. 31, 2011 Range of exercise price, $ 12.65 - $ 25.00	Mar. 31, 2011 Range of exercise price, $ 25.01 - $ 35.00	Mar. 31, 2011 Range of exercise price, $ 35.01 - $ 94.00	Mar. 31, 2011 Range of exercise price, $ 94.01 - $ 100.00	Mar. 31, 2011 Range of exercise price, $ 100.01 - $ 134.97
Summarized information of stock options outstanding and exercisable by exercise price range
Exercise price, low end of range (in dollars per share)					$ 12.65	$ 25.01	$ 35.01	$ 94.01	$ 100.01
Exercise price, high end of range (in dollars per share)					$ 25.00	$ 35.00	$ 94.00	$ 100.00	$ 134.97
Option Shares, Outstanding (in shares)	5,419	6,054	5,554	5,847	114	2,792	482	583	1,448
Weighted-Average Exercise Price Per Share (in dollars per share)					$ 15.61	$ 30.83	$ 52.40	$ 95.17	$ 107.42
Weighted Average Remaining Life (in years)					5.4	6.0	1.2	3.3	3.2
Option Shares Exercisable (in shares)	2,860	2,810	2,811		42	679	482	473	1,184
Weighted Average Exercise Price Per Share (in dollars per share)	$ 77.20	$ 73.57	$ 64.64		$ 15.69	$ 31.16	$ 52.40	$ 95.16	$ 108.72