Goodwill and Other Intangibles (Details) (USD $)	3 Months Ended	12 Months Ended
Apr. 04, 2015	Mar. 29, 2014	Dec. 31, 2014
Goodwill [Line Items]
Goodwill	$ 350,021,000us-gaap_Goodwill		$ 354,838,000us-gaap_Goodwill
Goodwill foreign currency translation adjustments	(5,000,000)
Intangible Assets [Line Items]
Intangible assets, gross	541,407,000		574,114,000
Intangible assets, accumulated amortization	328,299,000		341,743,000
Weighted-average useful life of acquired intangible assets	8 years		8 years
Intangible assets, gross foreign currency translation adjustments	(42,000,000)
Intangible assets, accumulated amortization foreign currency translation adjustments	(24,000,000)
Amortization expense	11,000,000us-gaap_AmortizationOfDeferredCharges	12,000,000us-gaap_AmortizationOfDeferredCharges
Future amortization expense, year 1	44,000,000
Future amortization expense, year 2	44,000,000
Future amortization expense, year 3	44,000,000
Future amortization expense, year 4	44,000,000
Future amortization expense, year 5	44,000,000
Capitalized software [Member]
Intangible Assets [Line Items]
Intangible assets, gross	308,213,000		334,280,000
Intangible assets, accumulated amortization	183,036,000		196,477,000
Weighted-average useful life of acquired intangible assets	7 years		7 years
Purchased intangibles [Member]
Intangible Assets [Line Items]
Intangible assets, gross	158,050,000		163,855,000
Intangible assets, accumulated amortization	111,965,000		112,279,000
Weighted-average useful life of acquired intangible assets	11 years		11 years
Trademarks and IPR&D[Member]
Intangible Assets [Line Items]
Intangible assets, gross	13,857,000		14,095,000
Licenses [Member]
Intangible Assets [Line Items]
Intangible assets, gross	5,390,000		5,371,000
Intangible assets, accumulated amortization	3,620,000		3,634,000
Weighted-average useful life of acquired intangible assets	6 years		6 years
Patents and other intangibles [Member]
Intangible Assets [Line Items]
Intangible assets, gross	55,897,000		56,513,000
Intangible assets, accumulated amortization	$ 29,678,000		$ 29,353,000
Weighted-average useful life of acquired intangible assets	8 years		8 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of amortization of deferred charges applied against earnings during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_AmortizationOfDeferredCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References