Company's Revenues by Product Groups (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 623,962	$ 546,910	$ 1,905,959	$ 1,520,818
Storage products [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	492,600	403,125	1,515,766	1,098,473
Networking products [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	105,849	116,998	311,651	346,381
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 25,513	$ 26,787	$ 78,542	$ 75,964