Goodwill and Other Intangibles (Tables)

3 Months Ended

Aug. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The following table summarizes the activity in Goodwill for the periods indicated:

	Three months ended August 31, 2013			Twelve months ended May 31, 2013			Three months ended August 31, 2012
Gross beginning balance	$	178.7		$	178.5		$	178.5
Accumulated impairment		(20.8	)		(20.8	)		(20.8	)
Beginning balance	$	157.9		$	157.7		$	157.7
Foreign currency translation		0.0			0.0			0.0
Other		—			0.2			—
Gross ending balance	$	178.7		$	178.7		$	178.5
Accumulated impairment		(20.8	)		(20.8	)		(20.8	)
Ending balance	$	157.9		$	157.9		$	157.7

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following table summarizes the activity in Total other intangibles subject to amortization for the periods indicated:

	Three months ended August 31, 2013			Twelve months ended May 31, 2013			Three months ended August 31, 2012
Beginning balance - customer lists	$	3.4		$	4.3		$	4.3
Additions		—			0.1			0.1
Amortization expense		(0.2	)		(1.0	)		(0.2	)
Foreign currency translation		0.0			0.0			0.0
Customer lists, net of accumulated amortization of $2.5, $2.3 and $1.5, respectively	$	3.2		$	3.4		$	4.2
Beginning balance - other intangibles	$	9.2		$	10.4		$	10.4
Additions		—			0.2			—
Amortization expense		(0.4	)		(1.5	)		(0.3	)
Foreign currency translation		0.0			—			—
Other		—			0.1			0.1
Other intangibles, net of accumulated amortization of $12.4, $12.0 and $10.8, respectively	$	8.8		$	9.2		$	10.2
Total other intangibles subject to amortization	$	12.0		$	12.6		$	14.4
Trademarks and other	$	2.0		$	2.0		$	2.0
Total other intangibles not subject to amortization	$	2.0		$	2.0		$	2.0
Total other intangibles	$	14.0		$	14.6		$	16.4