Commitments and Contingencies (Details) - USD ($) $ in Millions	Mar. 26, 2016	Dec. 26, 2015	Mar. 28, 2015
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase Obligation, Due in Next Twelve Months	$ 0.0
Letters of Credit Outstanding, Amount	$ 47.6	$ 48.7	$ 50.5

Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	us-gaap_PurchaseObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant