Accumulated Other Comprehensive Income (Loss) and Supplemental Equity Information (Details) - USD ($) $ / shares in Units, shares in Millions		1 Months Ended	3 Months Ended			9 Months Ended
	Aug. 03, 2016	Mar. 02, 2015	Oct. 01, 2016	Oct. 03, 2015	Jul. 04, 2015	Oct. 01, 2016	Oct. 03, 2015	Jan. 13, 2015	Jun. 07, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cash dividends declared per share (USD per share)	$ 0.31		$ 0.31	$ 0.29		$ 0.93	$ 0.87
Authorized amount								$ 500,000,000
Shares repurchased, shares		7.5
Shares repurchased, value		$ 500,000,000					$ 500,000,000
Average repurchase price (USD per share)		$ 66.96
Business Combination, Separately Recognized Transactions [Line Items]
Additions (purchases) of noncontrolling ownership interests							$ 330,000,000
Spinal Modulation
Business Combination, Separately Recognized Transactions [Line Items]
Equity investment									$ 40,000,000
Voting equity interest									19.00%
Additions (purchases) of noncontrolling ownership interests					$ 173,000,000
Ownership percentage by noncontrolling owners					81.00%
Contingent consideration					$ 155,000,000
Increase (decrease) in stockholders' equity					(297,000,000)
Increase (decrease) in noncontrolling interest					$ (33,000,000)