Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		9 Months Ended
Sep. 27, 2014	Sep. 27, 2014 Spinal Modulation [Member]	Jun. 07, 2013 Spinal Modulation [Member]	Sep. 27, 2014 NeuroTherm, Inc. [Member]	Aug. 06, 2014 NeuroTherm, Inc. [Member]
Goodwill [Roll Forward]
Balance at December 28, 2013	$ 3,524		$ 46		$ 132
Goodwill, Acquired During Period				132
Spinal Modulation		(36)
Foreign currency translation and other	(43)
Balance at September 27, 2014	$ 3,577	$ 46	$ 46		$ 132

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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