|
Goodwill and Intangible Assets, Net of Accumulated Amortization (Details Textual) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
May 31, 2013
|
May 31, 2012
|
May 31, 2011
|
|
| Goodwill and Intangible Assets, Net of Accumulated Amortization (Textual) | |||
| Goodwill | $ 533.9 | $ 517.4 | |
| Amortization expense relating to intangible assets | $ 19.0 | $ 23.0 | $ 20.3 |
| Finite-Lived Intangible Assets [Line Items] | |||
| Acquired intangible assets, Weighted average amortization period | 7 years 8 months 12 days | ||
|
Customer Lists [Member]
|
|||
| Finite-Lived Intangible Assets [Line Items] | |||
| Acquired intangible assets, Weighted average amortization period | 7 years 9 months 18 days | ||
|
Other Intangible Assets [Member]
|
|||
| Finite-Lived Intangible Assets [Line Items] | |||
| Acquired intangible assets, Weighted average amortization period | 6 years | ||
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|