Goodwill And Purchased Intangibles (Purchased Intangibles) (Details) (USD $)	Sep. 28, 2012	Dec. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 166,500,000	$ 179,500,000
Accumulated amortization	75,908,000	67,260,000
Definite-Lived: Developed Technologies
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	113,500,000	125,900,000
Accumulated amortization	52,900,000	51,300,000
Definite-Lived: Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	53,000,000	53,600,000
Accumulated amortization	$ 23,000,000	$ 16,000,000