SHARE-BASED COMPENSATION (Details 4) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
SHARE-BASED COMPENSATION
Outstanding, beginning of fiscal year, Options (in shares)	43,933,660	53,942,458	62,868,569
Granted (in shares)	19,000	599,800	2,063,748
Exercised, Options (in shares)	(5,398,331)	(5,879,405)	(6,215,867)
Forfeited, Options (in shares)	(4,148,765)	(4,729,193)	(4,773,992)
Outstanding, end of fiscal year, Options (in shares)	34,405,564	43,933,660	53,942,458
Options exercisable, end of fiscal year, Options (in shares)	33,662,480	37,021,049	34,237,404
Outstanding, beginning of fiscal year, Price (in dollars per share)	$ 7.78	$ 7.61	$ 7.16
Granted, Price (in dollars per share)	$ 6.57	$ 6.80	$ 7.21
Exercised, Price (in dollars per share)	$ 4.12	$ 3.92	$ 7.44
Forfeited, Price (in dollars per share)	$ 8.32	$ 10.45	$ 6.55
Outstanding, end of fiscal year, Price (in dollars per share)	$ 8.29	$ 7.78	$ 7.61
Options exercisable, end of fiscal year, Price (in dollars per share)	$ 8.31	$ 8.44	$ 9.23
Cash received from option exercises	$ 22.3	$ 23.1	$ 23.3
Aggregate intrinsic value of options exercisable	$ 13.0	$ 17.1	$ 22.9