Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 25, 2010
Income Tax Contingency [Line Items]
Total gross amount of reserves for income taxes	$ 2,167,000,000
Interest accrued	660,000,000	570,000,000
Interest accrued recognized	90,000,000	135,000,000
Operating loss carryforwards	10,000,000,000
Income tax undistributed international earnings	34,100,000,000
Expire 2012 [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	100,000,000
Expire 2013-2031 [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	8,200,000,000
Carried Forward Indefinitely [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 1,700,000,000

The amount as of the balance sheet date of the estimated future tax effects attributable to undistributed earnings of subsidiaries and other recognized entities in countries outside the country of domicile which will increase future taxable income when such earnings are distributed into the country of domicile.

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This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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- Definition

This element represents interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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