Accumulated Other Comprehensive Loss - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 14, 2014		Jun. 15, 2013		Jun. 14, 2014		Jun. 15, 2013
Losses/(gains) on cash flow hedges:
Total before tax	$ 11		$ (8)		$ 21		$ 51
Tax amounts	(5)		2		(9)		(19)
Net losses/(gains) after tax	6		(6)		12		32
Amortization of pension and retiree medical items:
Net prior service cost (a)	0	[1]	1		0	[1]	0
Net actuarial losses	53		83		101		163
Total before tax	53		84		101		163
Tax amounts	(17)		(27)		(33)		(54)
Net losses after tax	36		57		68		109
Total net losses reclassified for the period, net of tax	42		51		80		141
Cash Flow Hedges
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	11		(8)		21		51
Cash Flow Hedges | Foreign exchange contracts
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	(5)	[2]	1	[2]	(11)	[2]	4	[2]
Cash Flow Hedges | Foreign exchange contracts | Cost of Sales
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	(5)		1		(11)		4
Cash Flow Hedges | Interest rate derivatives
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	9	[2]	(18)	[2]	14	[2]	33	[2]
Cash Flow Hedges | Interest rate derivatives | Interest Expense
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	9		(18)		14		33
Cash Flow Hedges | Commodity contracts
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	7	[2]	9	[2]	18	[2]	14	[2]
Cash Flow Hedges | Commodity contracts | Cost of Sales
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	7		8		19		14
Cash Flow Hedges | Commodity contracts | Selling, General and Administrative Expenses
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges			$ 1		$ (1)		$ 0

[1] These items are included in the components of net periodic benefit cost for pension and retiree medical plans (see Note 7 for additional details).

[2] Foreign exchange derivative gains/losses are primarily included in cost of sales. Interest rate derivative gains/losses are included in interest expense. Commodity derivative gains/losses are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.