Financial Instruments (Financial Instruments Measured On Recurring Basis Using Significant Unobservable Input Level 3) (Details) (USD $) In Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Oct. 01, 2011 |
Sep. 25, 2010 |
Oct. 01, 2011 |
Sep. 25, 2010 |
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Auction Rate Securities [Member] |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||
| Beginning balance | $ 52 | $ 108 | $ 57 | $ 159 |
| Redemption at par | (8) | (43) | (14) | (91) |
| Gain (loss) included in net income (loss) | 1 | 2 | 2 | 3 |
| Change in fair value included in other comprehensive income (loss) | (3) | (7) | ||
| Ending balance | 45 | 64 | 45 | 64 |
UBS Put Option [Member] |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||
| Beginning balance | 1 | 2 | ||
| Gain (loss) included in net income (loss) | $ (1) | $ (2) | ||
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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Redemption At Par
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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- Definition This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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