Business Combinations Business Combinations (Schedule of Variable Interest Entities) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			6 Months Ended
	Dec. 28, 2013	Dec. 28, 2013 Patented Technology [Member]	Dec. 28, 2013 In Process Research and Development [Member]	Jun. 28, 2014 Spinal Modulation [Member]	Jun. 07, 2013 Spinal Modulation [Member]	Jun. 28, 2014 Spinal Modulation [Member] Patented Technology [Member]	Jun. 07, 2013 Spinal Modulation [Member] Patented Technology [Member]	Jun. 28, 2014 Spinal Modulation [Member] In Process Research and Development [Member]	Jun. 07, 2013 Spinal Modulation [Member] In Process Research and Development [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents				$ 9	$ 41
Other current assets				7	9
Goodwill, Acquired During Period	407			46
Business Combination, Indefinite-Lived Intangible Assets			60					45	45
Business Combination, Intangible Assets, Other than Goodwill		54				7	7
Other long-term assets	2			0	1
Total assets	526			114	149
Current liabilities	13			6	6
Deferred income taxes, net				19	19
Total liabilities				25	25
Non-controlling interest				$ 56	$ 84