Employee Benefit Plans (Tables)

3 Months Ended

Nov. 30, 2012

Schedule of Net Benefit Costs [Table Text Block]

Schedule of net periodic costs

	Pension Plans Three months ended November 30,						Post-Retirement Benefits Three months ended November 30,
	2012			2011			2012			2011
Components of net periodic benefit (credit) cost:
Service cost	$	0.0		$	0.0		$	0.0		$	0.0
Interest cost		1.7			2.1			0.4			0.5
Expected return on assets		(2.6	)		(2.7	)		—			—
Net amortization of prior service credit		—			—			(0.1	)		(0.2	)
Amortization of (gain) loss		0.5			0.3			0.9			1.0
Net periodic benefit (credit) cost	$	(0.4	)	$	(0.3	)	$	1.2		$	1.3

	Pension Plans Six months ended November 30,						Post-Retirement Benefits Six months ended November 30,
	2012			2011			2012			2011
Components of net periodic benefit (credit) cost:
Service cost	$	0.0		$	0.0		$	0.0		$	0.0
Interest cost		3.5			4.2			0.8			0.9
Expected return on assets		(5.3	)		(5.4	)		—			—
Net amortization of prior service credit		—			—			(0.2	)		(0.3	)
Amortization of (gain) loss		1.1			0.7			1.9			2.1
Net periodic benefit (credit) cost	$	(0.7	)	$	(0.5	)	$	2.5		$	2.7