Financial Instruments (Effective Portion of Pre-Tax (Gains)/Losses on Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013		Dec. 29, 2012
Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	$ 216	[1]	$ (29)	[1]
Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss	20		50
Losses Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	45	[2]	90	[2]
Forward Exchange Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	(9)	[1]	(23)	[1]
Forward Exchange Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss	(24)		41
Losses Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	0	[2]	8	[2]
Interest Rate Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	99	[1]	17	[1]
Interest Rate Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss	(13)		(2)
Losses Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	3	[2]	19	[2]
Commodity Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	126	[1]	(23)	[1]
Commodity Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss	57		11
Losses Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	$ 42	[2]	$ 63	[2]

[1] Foreign exchange derivative gains/losses are primarily included in selling, general and administrative expenses. Interest rate derivative losses are primarily from fair value hedges and are included in interest expense. These losses are substantially offset by decreases in the value of the underlying debt, which are also 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.

[2] Foreign exchange derivative gains/losses are primarily included in cost of sales. Interest rate derivative 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.