Derivative Instruments And Hedging Activities (Summary Of Notional Amount Of Open Foreign Exchange Contracts) (Details) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 28, 2012 USD ($)	Sep. 28, 2012 EUR (€)	Dec. 30, 2011 USD ($)	Dec. 30, 2011 EUR (€)
Derivative Instruments And Hedging Activities [Abstract]
Notional Amount of Open Foreign Currency Contracts	$ 14.9	€ 12.0	$ 20.2	€ 15.0
Notional amount of open foreign currency contracts, minimum range of maturities	1 month	1 month	1 month	1 month
Notional amount of open foreign currency contracts, maximum range of maturities	6 months	6 months	6 months	6 months

Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfForeignCurrencyDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant