Segment Information (Operating Business Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Apr. 04, 2015 segment	Mar. 29, 2014
Number of segments	2us-gaap_NumberOfReportableSegments
Net sales from products	$ 758us-gaap_SalesRevenueGoodsNet	$ 752us-gaap_SalesRevenueGoodsNet
Net sales from services	465us-gaap_SalesRevenueServicesNet	476us-gaap_SalesRevenueServicesNet
Net Sales	1,223us-gaap_Revenues	1,228us-gaap_Revenues
Business Segments Information
Operating earnings	119us-gaap_OperatingIncomeLoss	107us-gaap_OperatingIncomeLoss
Total other income (expense)	9us-gaap_NonoperatingIncomeExpense	(18)us-gaap_NonoperatingIncomeExpense
Earnings before income taxes	128	89
Products
Net sales from products	758	752
Business Segments Information
Operating earnings	64	39
Services
Net sales from services	465	476
Business Segments Information
Operating earnings	$ 55	$ 68

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ 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 210.5-03.7)

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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 210.5-03.1)

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ 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 210.5-03.1(a))

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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ 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 210.5-03.1(d))

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