Identified Intangible Assets and Goodwill - Identified Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,749,173	$ 1,576,773
Accumulated Amortization	(1,263,054)	(1,142,983)
Current Technology [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	930,767	857,367
Accumulated Amortization	(751,236)	(702,500)
Customer Base [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	444,439	402,739
Accumulated Amortization	(304,725)	(269,409)
Patent licensing [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	312,800	312,800
Accumulated Amortization	(198,346)	(167,728)
Order Backlog [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	4,500
Accumulated Amortization	(4,500)
Trade names [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	1,800	300
Accumulated Amortization	(680)	(300)
Workforce [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	3,567	3,567
Accumulated Amortization	(3,567)	(3,046)
In-process research and development [Member]
Other Intangible Assets [Line Items]
Gross Carrying Amount	51,300
Accumulated Amortization