Financial Instruments (Effective Portion Of Pre-Tax (Gains)/Losses On Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 25, 2010
Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement	$ (74)	[1]	$ (128)	[1]
Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	126		69
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	5	[2]	75	[2]
Forward Exchange Contracts [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement	14	[1]	6	[1]
Forward Exchange Contracts [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	(9)		26
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	26	[2]	40	[2]
Interest Rate Contracts [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement	(113)	[1]	(104)	[1]
Interest Rate Contracts [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	84		75
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	15	[2]	7	[2]
Commodity Contracts [Member] | Fair Value/Non-Designated Hedges [Member]
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement	25	[1]	(30)	[1]
Commodity Contracts [Member] | Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
(Gains)/Losses Recognized in Accumulated Other Comprehensive Loss	51		(32)
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement	$ (36)	[2]	$ 28	[2]

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