Capital and Treasury Stock - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended			15 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014	Jan. 01, 2017	Oct. 13, 2015	Jul. 21, 2014
Equity, Class of Treasury Stock [Line Items]
Common stock, shares issued (in shares)	3,119,843	3,119,843	3,119,843	3,119,843
Cash dividends per share (in dollars per share)	$ 3.15	$ 2.95	$ 2.76
Repurchase of common stock	$ 8,979	$ 5,290	$ 7,124
October 13, 2015 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 10,000
Repurchase of common stock				$ 7,300
July 21, 2014 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount						$ 5,000