SHARE-BASED COMPENSATION (Details 5) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Share-based compensation range of exercise price
Options vested and expected to vest, Number of Shares Outstanding	23,602,204
Options vested and expected to vest, Weighted Average Remaining Contractual Life	1 year 6 months 7 days
Options vested and expected to vest, Weighted Average Exercise Price (in dollars per share)	$ 8.59
Aggregate intrinsic value of options exercisable	$ 24.7	$ 13.0	$ 17.1
Weighted average remaining contractual life for options exercisable	1 year 5 months 26 days
Stock-Based Awards Activity
Share-based compensation range of exercise price
Aggregate intrinsic value for options outstanding	53.5
Aggregate intrinsic value of stock options vested and expected to vest	53.4
Aggregate intrinsic value of options exercisable	$ 53.0
In-the-money options	10,100,000
$1.94 - $2.26
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	5,420,232
Weighted Average Remaining Contractual Life, Options Outstanding	1 year 9 months 7 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 2.14
Number of Shares Exercisable, Options Exercisable	5,420,232
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 2.14
Exercise Prices, lower limit (in dollars per share)	$ 1.94
Exercise Prices, upper limit (in dollars per share)	$ 2.26
$3.39 - $5.75
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	3,604,664
Weighted Average Remaining Contractual Life, Options Outstanding	2 years 4 months 10 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 5.54
Number of Shares Exercisable, Options Exercisable	3,583,720
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 5.54
Exercise Prices, lower limit (in dollars per share)	$ 3.39
Exercise Prices, upper limit (in dollars per share)	$ 5.75
$5.87 - $7.07
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	233,183
Weighted Average Remaining Contractual Life, Options Outstanding	3 years 3 months 11 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 6.65
Number of Shares Exercisable, Options Exercisable	198,130
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 6.67
Exercise Prices, lower limit (in dollars per share)	$ 5.87
Exercise Prices, upper limit (in dollars per share)	$ 7.07
$7.08 - $10.59
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	5,506,846
Weighted Average Remaining Contractual Life, Options Outstanding	1 year 6 months 22 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 10.18
Number of Shares Exercisable, Options Exercisable	5,323,072
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 10.26
Exercise Prices, lower limit (in dollars per share)	$ 7.08
Exercise Prices, upper limit (in dollars per share)	$ 10.59
$10.67 - $11.41
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	1,104,933
Weighted Average Remaining Contractual Life, Options Outstanding	2 years 1 month 17 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 11.23
Number of Shares Exercisable, Options Exercisable	1,104,933
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 11.23
Exercise Prices, lower limit (in dollars per share)	$ 10.67
Exercise Prices, upper limit (in dollars per share)	$ 11.41
$11.53 - $13.98
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	6,619,666
Weighted Average Remaining Contractual Life, Options Outstanding	10 months 17 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 12.23
Number of Shares Exercisable, Options Exercisable	6,619,666
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 12.23
Exercise Prices, lower limit (in dollars per share)	$ 11.53
Exercise Prices, upper limit (in dollars per share)	$ 13.98
$14.34 - $23.02
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	1,123,348
Weighted Average Remaining Contractual Life, Options Outstanding	1 month 17 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 17.59
Number of Shares Exercisable, Options Exercisable	1,123,348
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 17.59
Exercise Prices, lower limit (in dollars per share)	$ 14.34
Exercise Prices, upper limit (in dollars per share)	$ 23.02
$1.94 - $23.02
Share-based compensation range of exercise price
Number of Shares Outstanding, Options Outstanding	23,612,872
Weighted Average Remaining Contractual Life, Options Outstanding	1 year 6 months 7 days
Weighted Average Exercise Price, Options Outstanding (in dollars per share)	$ 8.57
Number of Shares Exercisable, Options Exercisable	23,373,101
Weighted Average Exercise Price, Options Exercisable (in dollars per share)	$ 8.58
Exercise Prices, lower limit (in dollars per share)	$ 1.94
Exercise Prices, upper limit (in dollars per share)	$ 23.02