Restructuring, Impairment and Integration Charges Summary of Restructuring and Impairment Charges (Details) - 2014 Productivity Plan [Member] [Member] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 25, 2017	Mar. 19, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 27	$ 30
Restructuring, Settlement and Impairment Provisions, After Tax		$ 25
Restructuring, Settlement and Impairment Provisions, Net of Tax, Per Share Amount	$ 0.02	$ 0.02