Contingent Liabilties (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	9 Months Ended	12 Months Ended
Sep. 13, 2013	Sep. 29, 2013	Dec. 30, 2012
Loss Contingencies [Line Items]
Restricted cash		$ 22.3	$ 24.3
Threatened Litigation [Member]
Loss Contingencies [Line Items]
Demand for payment	$ 26.0
Decline in contributions, percent		70.00%	70.00%

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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