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Fair Value Measurements (Estimated Fair Values of Company's Financial Instruments) (Details) - USD ($)
$ in Millions
Jun. 29, 2017
Dec. 29, 2016
Term Loans [Member] | Carrying Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument $ 270.0 $ 270.0
Term Loans [Member] | Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument [1] 270.3 272.7
Notes due 2022 [Member] | Carrying Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument 400.0 400.0
Notes due 2022 [Member] | Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument [1] 410.6 414.5
Senior Unsecured Notes Due 2026 [Member] | Carrying Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument 250.0 250.0
Senior Unsecured Notes Due 2026 [Member] | Fair Value [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt Instrument [1] $ 243.5 $ 256.7
[1] The Company has estimated the fair value on an average of at least two non-binding broker quotes and the Company’s analysis. If the Company were to measure the borrowings in the above table at fair value on the balance sheet they would be classified as Level 2.