Financial Instruments (Effective Portion Of Pre-Tax (Gains)/Losses On Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 24, 2012		Mar. 19, 2011
Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
(Losses/(Gains) Recognized in Income Statement	$ (32)	[1]	$ (62)	[1]
Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	15		(21)
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	12	[2]	2	[2]
Forward Exchange Contracts [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
(Losses/(Gains) Recognized in Income Statement	(10)	[1]	(1)	[1]
Forward Exchange Contracts [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	29		25
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	(3)	[2]	5	[2]
Interest Rate Derivatives [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
(Losses/(Gains) Recognized in Income Statement	27	[1]	(22)	[1]
Interest Rate Derivatives [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	4		(6)
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	4	[2]	3	[2]
Commodity Contracts [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
(Losses/(Gains) Recognized in Income Statement	(49)	[1]	(39)	[1]
Commodity Contracts [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	(18)		(40)
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	$ 11	[2]	$ (6)	[2]

[1] Interest rate derivatives gains are primarily from fair value hedges and are included in interest expense. These gains are substantially offset by increases in the value of the underlying debt, which is also included in interest expense. All other gains/losses are from non-designated hedges and are included in corporate unallocated expenses

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