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Income Taxes - Net Deferred Tax Assets (Liabilities) (Detail) - USD ($)
$ in Millions
Jun. 24, 2017
Jun. 25, 2016
Income Tax Disclosure [Abstract]    
Non-current deferred tax assets $ 23.1 $ 14.7
Non-current deferred tax liabilities   (9.0)
Net deferred tax assets $ 23.1 $ 5.7