Accumulated Other Comprehensive Loss - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 23, 2013		Mar. 24, 2012
Losses/(gains) on cash flow hedges:
Total before tax	$ 59
Tax amounts	(21)
Losses after tax	38
Amortization of pension and retiree medical items:
Net prior service benefit	(1)	[1]
Net actuarial losses	80	[1]
Total before tax	79		67
Tax amounts	(27)		(23)
Reclassification of net losses to net income, after-tax amounts	52		44
Total losses reclassified for the period net of tax	90
Cash Flow Hedges
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	59	[2]	12	[2]
Cash Flow Hedges | Foreign exchange contracts
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	3	[2]	(3)	[2]
Cash Flow Hedges | Foreign exchange contracts | Cost of Sales
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	3
Cash Flow Hedges | Interest rate derivatives
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	51	[2]	4	[2]
Cash Flow Hedges | Interest rate derivatives | Interest Expense
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	51
Cash Flow Hedges | Commodity contracts
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	5	[2]	11	[2]
Cash Flow Hedges | Commodity contracts | Cost of Sales
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	6
Cash Flow Hedges | Commodity contracts | Selling, General and Administrative Expenses
Losses/(gains) on cash flow hedges:
Losses/(gains) on cash flow hedges	$ (1)

[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] Interest rate derivative losses are included in interest expense. All other gains/losses are primarily included in cost of sales.