Long-Term Debt (Schedule Of Revolving Credit Facility) (Details) (USD $)	9 Months Ended		0 Months Ended	9 Months Ended	12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended		0 Months Ended		0 Months Ended
	Sep. 28, 2012	Dec. 31, 2011	Jul. 22, 2011 North America [Member] Asset Based Revolving Credit Facility [Member]	Sep. 28, 2012 North America [Member] Asset Based Revolving Credit Facility [Member]	Dec. 31, 2011 North America [Member] Asset Based Revolving Credit Facility [Member]	Aug. 01, 2012 North America [Member] Asset Based Revolving Credit Facility [Member]	Sep. 30, 2011 North America [Member] Asset Based Revolving Credit Facility [Member]	Jul. 22, 2011 North America [Member] Terminated Credit Facility [Member]	Sep. 30, 2011 North America [Member] Terminated Credit Facility [Member]	Aug. 01, 2012 CANADA [Member] Asset Based Revolving Credit Facility [Member]	Sep. 28, 2012 Potential Increase [Member] North America [Member] Asset Based Revolving Credit Facility [Member]	Jul. 22, 2011 Minimum [Member] North America [Member] Asset Based Revolving Credit Facility [Member]	Sep. 28, 2012 Minimum [Member] Potential Increase [Member] North America [Member] Asset Based Revolving Credit Facility [Member]	Jul. 22, 2011 Maximum [Member] North America [Member] Asset Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 400,000,000			$ 700,000,000
Portion of credit facility designated for foreign currency tranche										70,000,000
Potential allowable increase in credit facility											100,000,000
Capital expenditures to fixed charges ratio	115.00%
Capitalized deferred finance costs							4,800,000
Unamortized fees and expenses									1,300,000
Threshold for line of credit facility borrowings												70,000,000
Threshold for line of credit facility percentage of asset based revolving credit facililties			10.00%
Equity interest pledged in foreign subsidiaries, percentage			65.00%
Line of credit facility commitment fee, percentage												0.375%		0.50%
Line of credit facility participation fee to lenders, percentage												1.50%		2.00%
Line of credit facility fronting fee, percentage			0.125%
Outstanding borrowings	1,697,100,000	1,048,900,000		0	34,900,000
Undrawn availability				562,900,000	336,000,000								100,000,000
Interest rate				0.00%	2.90%
Outstanding letters of credit	$ 52,200,000			$ 18,700,000	$ 20,200,000
Original issuance				Jul. 31, 2011	Jul. 31, 2011
Maturity date				Jul. 31, 2016	Jul. 31, 2016			Jul. 31, 2012