Business Combinations Business Combinations (Schedule of Business Acquisitions, By Acquisition) (Details) In Millions, unless otherwise specified	9 Months Ended			3 Months Ended		12 Months Ended			3 Months Ended	12 Months Ended		12 Months Ended
	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Dec. 28, 2013 USD ($)	Sep. 27, 2014 NeuroTherm, Inc. [Member] USD ($)	Aug. 06, 2014 NeuroTherm, Inc. [Member] USD ($)	Dec. 28, 2013 Endosense S.A. [Member] USD ($)	Dec. 28, 2013 Endosense S.A. [Member] CHF	Aug. 19, 2013 Endosense S.A. [Member] USD ($)	Dec. 28, 2013 Nanostim [Member] USD ($)	Dec. 28, 2013 Nanostim [Member] USD ($)	Oct. 11, 2013 Nanostim [Member] USD ($)	Dec. 28, 2013 Series of Individually Immaterial Business Acquisitions [Member] USD ($)
Business Combinations [Line Items]
Current assets					$ 22			$ 2			$ 1	$ 3
Property, plant and equipment					2
Goodwill	3,577		3,524		132			258			149	407
In-Process Research and Development								33			27	60
Business Combination, Intangible Assets, Other than Goodwill					89			20			34	54
Other assets								1			1	2
Current liabilities					(13)			(11)			(2)	(13)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent					(35)
Long-term debt					(50)
Net assets acquired					147			303			210	513
Cash paid				148		180				124		304
Less: Cash acquired				(1)		(9)				(3)		(12)
Net cash consideration	147	171		147		171	160			121		292
Contingent consideration								132			56	188
Fair value of St. Jude Medical, Inc.'s previously held interest						$ 0			$ 33	$ 33		$ 33