Restructuring, Impairment and Integration Charges 2014 Productivity Plan Activity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 13, 2015	Jun. 14, 2014	Jun. 13, 2015	Jun. 14, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 1	$ 0	$ 1	$ (3)
Payments for Restructuring			(107)	(112)
2014 Productivity Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Period Start			113
Restructuring, Settlement and Impairment Provisions	21	77	51	173
Payments for Restructuring			(85)
Restructuring Reserve, Settled without Cash			(4)
Restructuring Reserve - Period End	75		75
Restructuring Charges After Tax	$ 16	$ 55	$ 39	$ 128
Restructuring, Settlement and Impairment Provisions, Net of Tax, Per Share Amount	$ 0.01	$ 0.04	$ 0.03	$ 0.08
Employee Severance [Member] | 2014 Productivity Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Period Start			$ 89
Restructuring, Settlement and Impairment Provisions			15
Payments for Restructuring			(40)
Restructuring Reserve, Settled without Cash			(3)
Restructuring Reserve - Period End	$ 61		61
Other Costs [Member] | 2014 Productivity Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve - Period Start			24
Restructuring, Settlement and Impairment Provisions			36
Payments for Restructuring			(45)
Restructuring Reserve, Settled without Cash			(1)
Restructuring Reserve - Period End	$ 14		$ 14