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Goodwill and Other Intangibles (Tables)
12 Months Ended
May 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill
The following table summarizes the activity in Goodwill for the fiscal years ended May 31: 
 
2014
 
2013
Gross beginning balance
$
178.7

 
$
178.5

Accumulated impairment
(20.8
)
 
(20.8
)
Beginning balance
157.9

 
157.7

Impairment charge
(13.4
)
 

Foreign currency translation
0.0

 
0.0

Other

 
0.2

Gross ending balance
178.7

 
178.7

Accumulated impairment
(34.2
)
 
(20.8
)
Ending balance
$
144.5

 
$
157.9

Schedule of finite-lived intangible assets
The following table summarizes Other intangibles as of May 31: 
 
2014
 
2013
Beginning balance-Customer lists
$
3.4

 
$
4.3

Additions due to acquisition

 
0.1

Amortization expense
(1.0
)
 
(1.0
)
Foreign currency translation
0.0

 
0.0

Customer lists, net of accumulated amortization of $3.3 and $2.3, respectively
$
2.4

 
$
3.4

Beginning balance-Other intangibles
$
9.2

 
$
10.4

Additions due to acquisition

 
0.2

Amortization expense
(1.4
)
 
(1.5
)
Other
(0.2
)
 
0.1

Other intangibles, net of accumulated amortization of $13.4 and $12.0, respectively
$
7.6

 
$
9.2

Total other intangibles subject to amortization
$
10.0

 
$
12.6

Trademarks and other
$
2.2

 
$
2.0

Total other intangibles not subject to amortization
$
2.2

 
$
2.0

Total other intangibles
$
12.2

 
$
14.6

Schedule of future amortization of finite-lived intangible assets
The following table reflects the estimated amortization expense for intangibles for the next five fiscal years ending May 31: 
2015
$
2.3

2016
2.2

2017
2.2

2018
0.5

2019
0.4