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Goodwill and Intangible Assets, Net of Accumulated Amortization (Tables) | 12 Months Ended
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May 31, 2011
Goodwill and Intangible Assets, Net of Accumulated Amortization (Tables) [Abstract] |
Components of intangible assets, at cost |
|  | May 31, |
In millions |  | 2011 |  |  | 2010 |
Client lists |  | $ | 223.4 |  |  | $ | 194.4 |
Other intangible assets |  |  | 2.0 |  |  |  | 1.1 |
Total intangible assets, gross |  |  | 225.4 |  |  |  | 195.5 |
Less: Accumulated amortization |  |  | 148.2 |  |  |  | 133.9 |
Intangible assets, net of accumulated amortization |  | $ | 77.2 |  |  | $ | 61.6 |
Estimated future amortization expense relating to intangible asset balances |
In millions |  |  |
Year ending May 31, |  | Estimated amortization expense |
2012 |  | $ | 22.9 |
2013 |  | $ | 17.7 |
2014 |  | $ | 12.7 |
2015 |  | $ | 9.0 |
2016 |  | $ | 6.2 |

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- Definition This block of text may be used to disclose all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 + Details
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