Long-Term Debt (Schedule Of Revolving Credit Facility) (Details) (USD $)	0 Months Ended	9 Months Ended		12 Months Ended
	Sep. 06, 2013	Sep. 26, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Jul. 22, 2011
Debt Instrument [Line Items]
Outstanding borrowings		$ 1,523,800,000		$ 1,386,900,000
Outstanding letters of credit		58,800,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	1,000,000,000.0			700,000,000				400,000,000
Capital expenditures to fixed charges ratio	100.00%					115.00%
Increase, additional borrowings	250,000,000
Capitalized deferred finance costs				4,900,000		2,300,000	4,800,000
Threshold for line of credit facility percentage of asset based revolving credit facilities	10.00%
Outstanding borrowings		319,900,000		225,000,000
Total credit under facility		1,000,000,000		1,000,000,000
Undrawn availability		412,100,000	[1]	298,400,000	[1]
Interest rate		2.20%		2.00%
Outstanding letters of credit		29,600,000		112,700,000
Original issuance		Jul. 31, 2011		Jul. 31, 2011
Maturity date		Sep. 30, 2018		Sep. 30, 2018
Revolving Credit Facility [Member] | UNITED STATES [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity								630,000,000
Undrawn availability		263,900,000		102,100,000
Revolving Credit Facility [Member] | CANADA [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity								70,000,000
Undrawn availability		69,600,000		53,100,000
Revolving Credit Facility [Member] | Europe [Member]
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity								300,000,000
Undrawn availability		78,600,000		143,200,000
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Potential increase in remaining borrowing capacity						100,000,000
Threshold for line of credit facility borrowings	$ 100,000,000

[1] Total undrawn availability for the U.S. borrower, the Canadian borrower and the European borrowers at September 26, 2014 is $263.9 million, $69.6 million and $78.6 million, respectively. Total undrawn availability for the U.S. borrower, the Canadian borrower and the European borrowers at December 31, 2013 was $102.1 million, $53.1 million and $143.2 million, respectively.