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Summary of Significant Accounting Policies (Details 7) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 30, 2014 item | Dec. 31, 2013 | Dec. 25, 2012
Derivative Instruments and Hedging Activities |  |  |
Number of free standing interest rate swap agreements | 2us-gaap_NumberOfInterestRateDerivativesHeld |  |
Amount of hedge ineffectiveness | $ 0us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet | $ 0us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet | $ 0us-gaap_GainLossOnCashFlowHedgeIneffectivenessNet

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- Details
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- Definition The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
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