Other Financial Data - Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Aug. 03, 2016
Equity, Class of Treasury Stock [Line Items]
Payments for repurchased shares			$ 258,000,000	$ 619,000,000
Number of shares repurchased (in shares)			3.2
Repurchase of common shares, average cost (in US$ per share)			$ 81.66
Share repurchase authority utilized during period			$ 12,100,000,000
Amount available for future share repurchase	$ 1,900,000,000		1,900,000,000
Cash dividends paid	$ 77,000,000	$ 72,000,000	$ 154,000,000	$ 143,000,000
Maximum
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 14,000,000,000