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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2012
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Mar. 31, 2011
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| Goodwill and Intangible Assets Disclosure [Line Items] | ||
| Amortization expense related to purchased intangible assets | $ 22.4 | $ 23.6 |
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- Details
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- Definition
Aggregate amount of intangible asset amortization recognized as expense during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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