Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Identifiable Intangible Assets [Line Items]
Total other intangible assets, Gross Carrying Amount	$ 470,587	$ 458,523
Amortized intangible assets, Accumulated Amortization	(130,863)	(109,639)
Customer Lists and Relationships
Identifiable Intangible Assets [Line Items]
Amortized intangible assets, Gross Carrying Amount	174,660	172,724
Amortized intangible assets, Accumulated Amortization	(46,764)	(36,028)
Acquired Technology
Identifiable Intangible Assets [Line Items]
Amortized intangible assets, Gross Carrying Amount	101,178	99,383
Amortized intangible assets, Accumulated Amortization	(60,233)	(56,879)
Trademarks
Identifiable Intangible Assets [Line Items]
Amortized intangible assets, Gross Carrying Amount	57,609	53,510
Amortized intangible assets, Accumulated Amortization	(13,004)	(10,591)
Unamortized intangible assets, Gross Carrying Amount	125,223	123,735
Unamortized intangible assets, Accumulated Amortization
Other Intangible Assets
Identifiable Intangible Assets [Line Items]
Amortized intangible assets, Gross Carrying Amount	11,917	9,171
Amortized intangible assets, Accumulated Amortization	$ (10,862)	$ (6,141)