Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Indebtedness (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended
	Jun. 14, 2014	Jun. 15, 2013	Jun. 14, 2014	Jun. 15, 2013	Oct. 10, 2013 Maximum [Member]	Jun. 14, 2014 Alternative Base Rate [Member] Maximum [Member]	Jun. 14, 2014 Alternative Base Rate [Member] Minimum [Member]	Jun. 14, 2014 Euro Currency Rate [Member] Maximum [Member]	Jun. 14, 2014 Euro Currency Rate [Member] Minimum [Member]	Jun. 14, 2014 Revolving Credit Facility [Member]	Dec. 28, 2013 Revolving Credit Facility [Member]	Jun. 15, 2013 Revolving Credit Facility [Member]	Jun. 14, 2014 Foreign Currency Subfacility [Member]	Jun. 14, 2014 Swingline Subfacility [Member]	Jun. 14, 2014 Letter of Credit Subfacility [Member]	Jun. 14, 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	1.9
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	$ 0.9	$ 1.6	$ 1.9	$ 3.1