Severance and Exit Costs (Tables)

9 Months Ended

Feb. 29, 2012

Schedule of accrued severance cost

	Nine months ended February 29, 2012				Twelve months ended May 31, 2011				Nine months ended February 28, 2011
Beginning balance		$	1.9			$	3.4			$	3.4
Accruals			12.2				6.7				4.3
Payments			(12.9	)			(8.2	)			(6.2	)
Ending balance		$	1.2			$	1.9			$	1.5