Basis of Presentation and Our Divisions Venezuela (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Investments in previously consolidated Venezuelan subsidiaries [Line Items]
Portion of Venezuela charge related to our investments in previously consolidated Venezuelan subsidiaries and our joint venture		$ 1,200
Reclassification associated with Venezuela impairment charges	$ 0	(111)	$ 0
Venezuela impairment charges	$ 0	$ 1,359	$ 0