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Significant Accounting Policies (Consolidated Financial Statements) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Fiscal period duration 364 days 371 days 364 days
New Accounting Pronouncement, Early Adoption, Effect      
New Accounting Pronouncement, Early Adoption [Line Items]      
Current deferred income tax assets   $ (34.1)  
Current deferred income tax liabilities   (0.5)  
New Accounting Pronouncement, Early Adoption, Effect | Intangible and other assets      
New Accounting Pronouncement, Early Adoption [Line Items]      
Noncurrent deferred income tax assets   8.0  
Debt issuance cost   (2.8)  
New Accounting Pronouncement, Early Adoption, Effect | Deferred income tax liabilities      
New Accounting Pronouncement, Early Adoption [Line Items]      
Noncurrent deferred income tax liabilities   (25.6)  
New Accounting Pronouncement, Early Adoption, Effect | Prepaid expenses and other current assets      
New Accounting Pronouncement, Early Adoption [Line Items]      
Debt issuance cost   (1.2)  
New Accounting Pronouncement, Early Adoption, Effect | Long-term debt      
New Accounting Pronouncement, Early Adoption [Line Items]      
Debt issuance cost   $ 4.0