Annual report pursuant to Section 13 and 15(d)

GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Detail)

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GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Goodwill and Intangible Assets Disclosure [Line Items]      
Amortization expense related to purchased intangible assets $ 90.5 $ 90.0 $ 80.3