Segment Information (Operating Business Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014 segment	Sep. 28, 2013
Number of Reportable Segments			2
Net sales from products	$ 921	$ 998	$ 2,561	$ 2,897
Net sales from services	515	519	1,497	1,513
Net Sales	1,436	1,517	4,058	4,410
Business Segments Information
Operating earnings	207	246	452	622
Total other income (expense)	(56)	5	(115)	(48)
Earnings before income taxes	151	251	337	574
Products
Business Segments Information
Operating earnings	141	171	276	402
Services
Business Segments Information
Operating earnings	$ 66	$ 75	$ 176	$ 220

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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.

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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).

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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.

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

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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).

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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.

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

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