Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets, Net of Accumulated Amortization (Details)

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Goodwill and Intangible Assets, Net of Accumulated Amortization (Details) (USD $)
In Millions, unless otherwise specified
May 31, 2014
May 31, 2013
Components of intangible assets, at cost    
Client lists $ 240.9 $ 231.0
Other intangible assets 2.6 2.4
Total intangible assets, gross 243.5 233.4
Less: Accumulated amortization 202.9 188.2
Intangible assets, net of accumulated amortization 40.6 45.2
Estimated future amortization expense relating to intangible assets    
Fiscal year ending May 31, 2015 13.4  
Fiscal year ending May 31, 2016 9.9  
Fiscal year ending May 31, 2017 7.3  
Fiscal year ending May 31, 2018 4.9  
Fiscal year ending May 31, 2019 $ 2.9