Goodwill and Intangible Assets-Intangibles (Details 2) (USD $)	3 Months Ended	12 Months Ended
	Mar. 30, 2014	Dec. 29, 2013
Intangible Assets
Accumulated Amortization	$ (206,470,000)	$ (231,612,000)
Intangible Asset Adjustment		(83,228,000)
Total Intangible Assets, gross	427,569,000	562,744,000
Total Intangible Assets, net	221,099,000	247,904,000
Acquired in-process research and development [Member]
Intangible Assets
Gross Carrying Amount, Indefinite-lived Intangible Asset	6,300,000	42,500,000
Adjustments of indefinite lived intangible assets		(36,200,000)
Net Carrying Amount, Indefinite-lived Intangible Assets	6,300,000	6,300,000
Developed product technology [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	292,769,000	348,385,000
Accumulated Amortization	(129,520,000)	(121,304,000)
Adjustments of finite lived intangible assets		(44,216,000)
Intangible assets subject to amortization	163,249,000	182,865,000
Customer relationships [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	7,600,000	20,650,000
Accumulated Amortization	(2,326,000)	(14,426,000)
Adjustments of finite lived intangible assets		0
Intangible assets subject to amortization	5,274,000	6,224,000
Trademarks [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	8,900,000	14,200,000
Accumulated Amortization	(1,700,000)	(3,634,000)
Adjustments of finite lived intangible assets		(2,812,000)
Intangible assets subject to amortization	7,200,000	7,754,000
Covenants not to compete [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	2,400,000	3,100,000
Accumulated Amortization	(2,400,000)	(2,959,000)
Adjustments of finite lived intangible assets		0
Intangible assets subject to amortization	0	141,000
Technology licenses and patents [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	109,600,000	133,909,000
Accumulated Amortization	(70,524,000)	(89,289,000)
Adjustments of finite lived intangible assets		0
Intangible assets subject to amortization	39,076,000	44,620,000
Acquisition-related Intangible Assets [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	311,669,000	386,335,000
Accumulated Amortization	(135,946,000)	(142,323,000)
Adjustments of finite lived intangible assets		(47,028,000)
Intangible assets subject to amortization	175,723,000	196,984,000
Intangible assets subject to amortization [Member]
Intangible Assets
Gross Carrying Amount, Finite-lived Intangible Asset	421,269,000	520,244,000
Accumulated Amortization	(206,470,000)	(231,612,000)
Adjustments of finite lived intangible assets		(47,028,000)
Intangible assets subject to amortization	$ 214,799,000	$ 241,604,000