Goodwill and Other Intangibles (Tables)

9 Months Ended

Feb. 28, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Activity in Goodwill for the Periods Indicated

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

	Nine months ended   February 28, 2015			Twelve months ended May 31, 2014			Nine months ended   February 28, 2014
Gross beginning balance	$	178.7		$	178.7		$	178.7
Accumulated impairment	(34.2		)	(20.8		)	(20.8		)
Beginning balance	$	144.5		$	157.9		$	157.9
Impairment charge	—			(13.4		)	(13.4		)
Foreign currency translation	(0.1		)	0.0			0.0
Gross ending balance	$	178.6		$	178.7		$	178.7
Accumulated impairment	(34.2		)	(34.2		)	(34.2		)
Ending balance	$	144.4		$	144.5		$	144.5

Summary of Activity in Total Other Intangibles for the Periods Indicated

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

	Nine months ended   February 28, 2015			Twelve months ended May 31, 2014			Nine months ended   February 28, 2014
Beginning balance - customer lists	$	2.4		$	3.4		$	3.4
Additions	0.8			—			—
Amortization expense	(0.6		)	(1.0		)	(0.7		)
Foreign currency translation	0.0			0.0			0.0
Customer lists, net of accumulated amortization    of $3.9, $3.3 and $3.0, respectively	$	2.6		$	2.4		$	2.7
Beginning balance - other intangibles	$	7.6		$	9.2		$	9.2
Amortization expense	(1.1		)	(1.4		)	(1.1		)
Foreign currency translation	0.0			0.0			0.0
Other	—			(0.2		)	—
Other intangibles, net of accumulated amortization    of $14.5, $13.4 and $13.1, respectively	$	6.5		$	7.6		$	8.1
Total other intangibles subject to amortization	$	9.1		$	10.0		$	10.8
Trademarks and other	$	2.2		$	2.2		$	2.0
Total other intangibles not subject to   amortization	$	2.2		$	2.2		$	2.0
Total other intangibles	$	11.3		$	12.2		$	12.8