QUARTERLY FINANCIAL DATA (UNAUDITED) (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Fiscal year ended March 31, 2012	Mar. 31, 2013 Periods prior to the fiscal year 2012	Sep. 28, 2012 Warrant	Sep. 28, 2012 Warrant Out-of-period	Mar. 31, 2013 Warrant Out-of-period
Quarterly financial data
Fair value adjustment				$ 23.0	$ 12.8	$ 5.7
Errors primarily understated	$ 9.3	$ 6.1	$ 3.2