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Long-term marketable securities maturities range.

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The total par or stated value of auction preferred securities, by stock series.

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For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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The latest date, in a range of maturity dates, that a debt security categorized as neither trading nor held-to-maturity is scheduled to be repaid.

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The earliest date, in a range of maturity dates, that a debt security categorized as neither trading nor held-to-maturity is scheduled to be repaid.

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Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer.

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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The fair value of available-for-sale securities that serve as collateral for borrowings.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended
	Oct. 01, 2011	Sep. 25, 2010	Dec. 25, 2010	Oct. 01, 2011 Maximum [Member]	Oct. 01, 2011 Minimum [Member]	Oct. 01, 2011 Auction Rate Securities [Member]	Oct. 01, 2011 Auction Rate Securities [Member]	Oct. 01, 2011 Non-UBS Student Loan ARS [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities pledged as collateral	$ 10		$ 29
Auction market, par value						52	52
Net carrying amount, current						45	45	7
Proceeds from sale of available-for-sale securities	21							8
Realized gain on available-for-sale securities	3	8				1
Available-for-sale marketable debt securities maturity, years	1						2
Maturity of Auction Rate Securities, minimum							January 2030
Maturity of Auction Rate Securities, maximum							December 2050
Long-term marketable securities maturities range in years				2	1
Fair Value	$ 50