Schedule of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 29, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 538,366	$ 537,366
Accumulated Amortization	272,661	218,499
Net Carrying Amount	265,705	318,867
Weighted Average Useful Life, years	7 years	7 years
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	358,555	357,555
Accumulated Amortization	180,960	143,126
Net Carrying Amount	177,595	214,429
Weighted Average Useful Life, years	6 years 3 months 18 days	6 years 3 months 18 days
Customer Relationships And Service And Software Maintenance Contracts
Finite-Lived Intangible Assets
Gross Carrying Amount	144,971	144,971
Accumulated Amortization	77,139	63,464
Net Carrying Amount	67,832	81,507
Weighted Average Useful Life, years	8 years	8 years
Trade Names And Trademarks
Finite-Lived Intangible Assets
Gross Carrying Amount	33,840	33,840
Accumulated Amortization	13,562	10,909
Net Carrying Amount	20,278	22,931
Weighted Average Useful Life, years	9 years	9 years
Customer Backlog
Finite-Lived Intangible Assets
Gross Carrying Amount	1,000	1,000
Accumulated Amortization	$ 1,000	$ 1,000
Weighted Average Useful Life, years	4 months 24 days	4 months 24 days