Employee Benefit Plans (Tables)

3 Months Ended

Feb. 28, 2013

Schedule of Net Benefit Costs [Table Text Block]

	Pension Plans Three months ended						Post-Retirement Benefits Three months ended
	February 28, 2013			February 29, 2012			February 28, 2013			February 29, 2012
Components of net periodic benefit (credit) cost:
Service cost	$	—		$	—		$	0.0		$	0.0
Interest cost		1.7			2.1			0.3			0.4
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			0.3			0.9
Net periodic benefit (credit) cost	$	(0.4	)	$	(0.3	)	$	0.5		$	1.1

	Pension Plans Nine months ended						Post-Retirement Benefits Nine months ended
	February 28, 2013			February 29, 2012			February 28, 2013			February 29, 2012
Components of net periodic benefit (credit) cost:
Service cost	$	—		$	—		$	0.0		$	0.0
Interest cost		5.2			6.3			1.1			1.4
Expected return on assets		(7.9	)		(8.1	)		—			—
Net amortization of prior service credit		—			—			(0.3	)		(0.5	)
Amortization of (gain) loss		1.6			1.0			2.2			2.9
Net periodic benefit (credit) cost	$	(1.1	)	$	(0.8	)	$	3.0		$	3.8