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Description of Business and Summary of Significant Accounting Policies Newly Adopted Accounting Pronouncements (Details) $ in Millions | 12 Months Ended
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Dec. 27, 2014 USD ($)
Other Current Assets |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Change resulting from newly adopted accounting pronouncements | $ 27.6
Other Current Liabilities |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Change resulting from newly adopted accounting pronouncements | 1.5
Noncurrent Deferred Tax Liabilities |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Change resulting from newly adopted accounting pronouncements | 7.7
Noncurrent Deferred Tax Assets |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Change resulting from newly adopted accounting pronouncements | 18.4
Deferred Debt Issuance Costs |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Change resulting from newly adopted accounting pronouncements | $ 5.4

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