Debt (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended
	Sep. 06, 2014	Sep. 07, 2013	Sep. 06, 2014	Sep. 07, 2013	Oct. 10, 2013 Maximum [Member]	Sep. 06, 2014 Alternative Base Rate [Member] Maximum [Member]	Sep. 06, 2014 Alternative Base Rate [Member] Minimum [Member]	Sep. 06, 2014 Euro Currency Rate [Member] Maximum [Member]	Sep. 06, 2014 Euro Currency Rate [Member] Minimum [Member]	Sep. 06, 2014 Revolving Credit Facility [Member]	Dec. 28, 2013 Revolving Credit Facility [Member]	Sep. 07, 2013 Revolving Credit Facility [Member]	Sep. 06, 2014 Foreign Currency Subfacility [Member]	Sep. 06, 2014 Swingline Subfacility [Member]	Sep. 06, 2014 Letter of Credit Subfacility [Member]	Sep. 06, 2014 Public Bonds [Member]	Oct. 10, 2013 October Tenth Two Thousand Eighteen [Member] Term Loan A [Member]
Debt Instrument [Line Items]
Aggregate principal amount debt instrument					$ 1,350.0					$ 200.0						$ 375.0	$ 775.0
Outstanding letters of credit										3.3	3.5	3.1
Basis spread on variable rate						1.25%	0.375%	2.25%	1.375%
Revolving credit facility amount													100.0	50.0	50.0
Interest rate																6.125%
Amortization of deferred financing costs	$ 1.0	$ 1.5	$ 2.9	$ 4.6