Acquisitions (Schedule of Purchase Price Allocation) (Details) (Gennum [Member], USD $) In Thousands, unless otherwise specified	Oct. 28, 2012	Jul. 29, 2012	Mar. 20, 2012
Cash			$ 19,664
Inventories			62,941
Other current assets			35,753
Property, plant and equipment			25,702
Amortizable intangible assets			129,863
In-process research and development			29,100
Goodwill	262,800	258,400	262,815
Other non-current assets			31,243
Deferred tax liabilities			(47,934)
Other current and non-current liabilities			(42,601)
Total acquisition consideration			506,546
Developed Technology [Member]
Amortizable intangible assets			95,100
Customer Relationships [Member]
Amortizable intangible assets			28,000
Other Intangible Assets [Member]
Amortizable intangible assets			$ 6,763