|
Concentrations of Credit and Operation Risk (Details) (Narrative) (USD $)
In Millions, unless otherwise specified |
Dec. 27, 2014
|
Dec. 28, 2013
|
|---|---|---|
| Concentration Risk [Line Items] | ||
| Number of concentrated customers accounted in consolidated accounts receivable | 3 | 3 |
| Foreign currency contracts, liabilities, at fair value | $ 7 | |
| Top Customer One | ||
| Concentration Risk [Line Items] | ||
| Percentage of accounts receivable | 28.00% | 21.00% |
| Top Customer Two | ||
| Concentration Risk [Line Items] | ||
| Percentage of accounts receivable | 17.00% | 18.00% |
| Top Customer Three | ||
| Concentration Risk [Line Items] | ||
| Percentage of accounts receivable | 15.00% | 17.00% |