Financial Instruments (Narrative) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 26, 2011	Jun. 27, 2010	Jun. 26, 2011	Jun. 27, 2010
Financial Instruments
Derivative settlement date			Dec. 01, 2012
Reclassification from AOCI to income resulting from ineffectiveness related to the Company's derivatives	$ 0	$ 0	$ 0	$ 0
Net pre-tax unrealized gains (losses) within AOCI are expected to be reclassified from AOCI during the next twelve months	$ 9.6		$ 9.6