Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Goodwill [Line Items]
Goodwill	$ 359,376		$ 359,376		$ 352,080
Goodwill foreign currency translation adjustments			7,000
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, accumulated amortization	456,854		$ 456,854		$ 390,920
Finite-lived intangible assets, average useful life in years			7 years		7 years
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	13,924		$ 13,924		$ 13,544
Intangible Assets [Line Items]
Intangible assets, gross	680,910		680,910		597,975
Intangible assets, gross foreign currency translation adjustments			52,000
Intangible assets, accumulated amortization foreign currency translation adjustments			33,000
Amortization expense	11,000	$ 12,000	33,000	$ 34,000
Finite-Lived Intangible Assets Future Amortization Expense [Abstract]
Future amortization expense, year 1	44,000		44,000
Future amortization expense, year 2	44,000		44,000
Future amortization expense, year 3	44,000		44,000
Future amortization expense, year 4	44,000		44,000
Future amortization expense, year 5	44,000		44,000
Capitalized software [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	424,155		424,155		355,973
Finite-lived intangible assets, accumulated amortization	273,430		$ 273,430		$ 223,572
Finite-lived intangible assets, average useful life in years			5 years		5 years
Purchased intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	169,023		$ 169,023		$ 162,180
Finite-lived intangible assets, accumulated amortization	136,491		$ 136,491		$ 127,045
Finite-lived intangible assets, average useful life in years			11 years		11 years
Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	5,837		$ 5,837		$ 4,632
Finite-lived intangible assets, accumulated amortization	4,502		$ 4,502		$ 3,851
Finite-lived intangible assets, average useful life in years			6 years		6 years
Patents and other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	67,971		$ 67,971		$ 61,646
Finite-lived intangible assets, accumulated amortization	$ 42,431		$ 42,431		$ 36,452
Finite-lived intangible assets, average useful life in years			8 years		8 years