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Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)
$ in Millions
Dec. 30, 2017
Jul. 01, 2017
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Long-term debt $ 1,358.7 $ 1,247.7
Reported Value Measurement [Member]    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Long-term debt 1,358.7 1,247.7
Fair Value Inputs Level 2 [Member]    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Fair value of long term debt $ 1,378.1 $ 1,258.3