|
Financial Instruments (Details) (Narrative) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Sep. 27, 2014
|
Sep. 28, 2013
|
Sep. 27, 2014
|
Sep. 28, 2013
|
Sep. 27, 2014
Money Market Funds
|
Dec. 28, 2013
Money Market Funds
|
Sep. 27, 2014
Mutual Funds
|
Dec. 28, 2013
Mutual Funds
|
|
| Financial Instruments [Line Items] | ||||||||
| Available-for-sale investments used as collateral | $ 18 | $ 18 | ||||||
| Restricted investments | 15 | 14 | ||||||
| Marketable securities reclassified from LT to ST | 45 | |||||||
| Proceeds from sale of available-for-sale securities | 0 | 0 | 14 | |||||
| Realized gain (loss) from Proceeds from sales of available-for-sale securities | $ 0 | $ 0 | $ 0 | $ 0 | ||||