Goodwill and Other Intangibles (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010	Dec. 31, 2010	Jul. 18, 2011 Anter [Member]	Oct. 01, 2011 Purchased intangibles [Member]	Dec. 31, 2010 Purchased intangibles [Member]	Oct. 01, 2011 Capitalized software [Member]	Dec. 31, 2010 Capitalized software [Member]	Oct. 01, 2011 Licenses [Member]	Dec. 31, 2010 Licenses [Member]	Oct. 01, 2011 Patents and other intangibles [Member]	Dec. 31, 2010 Patents and other intangibles [Member]
Goodwill and Other Intangibles [Abstract]
Goodwill	$ 298,297,000		$ 298,297,000		$ 291,657,000
Goodwill acquired						6,080,000
Intangible assets acquired						3,910,000
Intangible assets, gross foreign currency translation adjustments			7,000,000
Intangible assets, accumulated amortization foreign currency translation adjustments			4,000,000
Amortization of intangibles	7,000,000	6,000,000	22,778,000	19,621,000
Future amortization expense, year 1			40,000,000
Future amortization expense, year 2			40,000,000
Future amortization expense, year 3			45,000,000
Future amortization expense, year 4			45,000,000
Future amortization expense, year 5			45,000,000
Intangible Assets [Line Items]
Intangible assets, gross	437,539,000		437,539,000		403,381,000		139,169,000	134,723,000	259,004,000	229,850,000	6,644,000	9,877,000	32,722,000	28,931,000
Intangible assets, accumulated amortization	$ 241,234,000		$ 241,234,000		$ 222,065,000		$ 78,581,000	$ 70,832,000	$ 142,512,000	$ 127,056,000	$ 5,973,000	$ 8,971,000	$ 14,168,000	$ 15,206,000
Intangible assets, average useful life in years			7		7		10	10	5	5	6	7	8	8