Other Financial Data (Stockholders' Equity) (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Aug. 03, 2016
Stockholders' Equity [Abstract]
Payments for repurchased shares			$ 619,000,000	$ 939,000,000
Number of shares repurchased (in shares)			9.0
Repurchase of common shares, average cost (in US$ per share)			$ 68.68
Share repurchase authority utilized during period			$ 11,600,000,000
Amount available for future share repurchase	$ 415,000,000		415,000,000
Cash dividends paid	$ 72,000,000	$ 72,000,000	$ 143,000,000	$ 148,000,000
Subsequent Event
Subsequent Event [Line Items]
Increase to authorized share repurchase amount					$ 2,000,000,000
Stockholders' Equity [Abstract]
Amount available for future share repurchase					2,400,000,000
Maximum | Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, authorized amount					$ 14,000,000,000