Long-Term Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended				3 Months Ended				0 Months Ended	9 Months Ended	0 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 25, 2011 Senior Secured Revolving Credit Facility [Member]	May 20, 2011 Senior Secured Revolving Credit Facility [Member]	Sep. 25, 2011 J P Morgan Chase [Member]	Sep. 25, 2011 London Interbank Offered Rate [Member]	Sep. 25, 2011 Credit Agreement [Member]	Sep. 25, 2011 Alternate Base Rate [Member]	May 20, 2011 Term Loan [Member]	Sep. 25, 2011 Term Loan [Member]	May 20, 2011 Revolving Credit Facility [Member]
Additional cash used to extinguish outstanding obligations									$ 18.8
Maturity date of previous credit facility									June of 2013		June of 2012
Credit Facility, revolving loan agreement				400.0
Credit Facility, amount drawn	300.0		300.0
Incremental revolving commitment				150
Maturity date of the Credit Facility			May 20, 2016
Cash charges incurred for new credit facility	5.2	0.8	5.2
Write-off of deferred financing fees	2.1	2.1								2.1
Borrowings interest rate terms	Eurocurrency Loans or Alternate Base Rate (ABR) loans. Eurocurrency Loans accrue interest at the London Interbank Offered Rate (LIBOR) plus 1.75%. The ABR is the highest of JP Morgan Chase Bank prime rate, the federal funds effective rate plus 1/2 of 1 percent, or adjusted LIBOR, as defined by the credit agreement, plus 1%. ABR loans accrue interest at the ABR rate plus 0.75%.
Effective interest rate over federal funds					0.50%
Interest rate over London Interbank Offered Rate						1.75%	1.00%	0.75%
Commitment fee, per annum			0.35%
Outstanding letters of credit			1.3
Amount reduced to under the Credit Facility	$ 98.7
First tier foreign subsidiaries stock pledged to secure debt			65.00%
Financial covenant terms	minimum interest coverage ratio of 3.0 to 1.0 and a maximum leverage ratio of 3.25 to 1.0
Minimum interest coverage ratio	3.0 to 1.0
Maximum leverage ratio	3.25 to 1.0