Segment Information (Operating Business Segment) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2015 USD ($)	Sep. 27, 2014 USD ($)	Oct. 03, 2015 USD ($) segment	Sep. 27, 2014 USD ($)
Segment Reporting [Abstract]
Number of segments | segment			2
Net Sales	$ 1,422	$ 1,436	$ 4,013	$ 4,058
Business Segments Information
Operating earnings	231	207	605	452
Total other expense	(34)	(56)	(65)	(115)
Earnings from continuing operations before income taxes	197	151	540	337
Products
Net Sales	925	921	2,550	2,561
Business Segments Information
Operating earnings	178	141	413	276
Services
Net Sales	497	515	1,463	1,497
Business Segments Information
Operating earnings	$ 53	$ 66	$ 192	$ 176