Fair Value Measurements (Narrative) (Details) (USD $)	Sep. 25, 2011	Sep. 09, 2011	Dec. 31, 2010
Estimated fair values of long-term debt instruments	$ 8,627,000,000		$ 6,211,000,000
Aggregate notional amount of outstanding foreign currency exchange contracts	1,900,000,000		2,200,000,000
Aggregate notional amount of interest rate swap contracts	450,000,000		0
Maximum maturity date of highly liquid instruments (in days)	90 days
Unamortized discount on long-term debt instruments	507,000,000		505,000,000
Carrying amount of long-term debt instruments, excluding unamortized discounts	7,545,000,000	2,000,000,000	5,524,000,000
Rabbi Trust [Member]
Investment securities	712,000,000		843,000,000
U.S. Treasury Securities [Member]
Available-for-sale securities, current			$ 500,000,000

Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities and which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References+ Details