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Financial Instruments (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | |
|---|---|---|
|
Sep. 29, 2012
|
Oct. 01, 2011
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|
| Financial Instrument [Line Items] | ||
| Available-for-sale investments in money market funds used as collateral | $ 10 | |
| Sales of available-for-sale securities | 6 | 21 |
| Realized gain on available-for-sale securities | 3 | |
|
Par Value [Member] | Auction Rate Securities [Member]
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| Financial Instrument [Line Items] | ||
| Available-for-sale Securities, Debt Securities, Current | $ 37 | |