Business Combinations Business Combinations (Schedule of Variable Interest Entities) (Details) (USD $) In Millions, unless otherwise specified	Sep. 27, 2014	Dec. 28, 2013	Sep. 27, 2014 Spinal Modulation [Member]	Jun. 07, 2013 Spinal Modulation [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents			$ 5	$ 41
Other current assets			8	9
Goodwill	3,577	3,524	46	46
In-Process Research and Development			45	45
Business Combination, Intangible Assets, Other than Goodwill			7	7
Other assets			0	1
Total assets			111	149
Current liabilities			6	6
Deferred income taxes			19	19
Total liabilities			25	25
Non-controlling interest			$ 50	$ 84