INTEREST AND OTHER, NET (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
INTEREST AND OTHER, NET
Interest expense	$ 19.9	$ 15.8	$ 60.4	$ 47.1
Interest income	4.7	3.7	11.9	15.4
Gains on foreign exchange transactions	3.3	6.3	11.3	13.9
Total proceeds from sale of common shares			67.3
Loss on sale of common shares			7.1
Gain related to change in fair value of warrants				$ 64.8