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Stock-based Compensation - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 07, 2017
shares
Jun. 27, 2020
USD ($)
Tranche
shares
Jun. 29, 2019
USD ($)
shares
Jun. 30, 2018
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock compensation expense   $ 17.9 $ 15.7 $ 21.6
Income tax benefit   $ 108.1 $ (51.5) $ 5.1
Dividend Yield   0.00% 0.00% 0.00%
Performance-based Restricted Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Requisite service period   3 years    
2007 Option Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Contractual term of options granted   10 years    
Number of Tranches | Tranche   3    
Restricted stock vested | shares   3,326    
Stock compensation expense   $ 0.2 $ 0.4 $ 9.5
Income tax benefit     (0.1) (3.1)
Intrinsic value of exercised options   7.9 13.1 17.1
Fair value of shares vested   $ 0.1 $ 0.3 $ 65.6
2007 Option Plan [Member] | Tranche I [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options approved for grant | shares   0 0 0
2007 Option Plan [Member] | Tranche II [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options approved for grant | shares   0 0 0
2007 Option Plan [Member] | Tranche III [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options approved for grant | shares   0 0 0
2007 Option Plan [Member] | Tranche II and III [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vested | shares 2,100,000      
Options vested | shares 1,400,000      
Accelerated compensation expense       $ 6.3
Stock compensation expense       24.9
2015 Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Contractual term of options granted   10 years    
Options approved for grant | shares   0    
Restricted stock vested | shares   526,885    
Stock compensation expense   $ 16.4 $ 15.3 12.1
Income tax benefit   (4.4) (4.1) (3.9)
Intrinsic value of exercised options   2.0 0.2 0.2
Fair value of shares vested   $ 23.7 $ 18.0 $ 8.1
Common stock reserved for issuance | shares   8,850,000    
Number of shares available for grant | shares   5,559,907    
Unrecognized compensation cost   $ 26.6    
Compensation expense, period for recognition   2 years    
2015 Incentive Plan [Member] | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     4 years  
2015 Incentive Plan [Member] | Time-based restricted shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period   3 years 4 years  
2015 Incentive Plan [Member] | Performance-based Restricted Shares        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Requisite service period   3 years    
2015 Incentive Plan [Member] | Performance relative to the ROIC and Relative TSR goals | Performance-based Restricted Shares | Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation arrangement by Share-based payment award, annual award vesting rights   0.00%    
2015 Incentive Plan [Member] | Performance relative to the ROIC and Relative TSR goals | Performance-based Restricted Shares | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation arrangement by Share-based payment award, annual award vesting rights   200.00%    
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Discount on purchases of common stock   15.00%    
Stock-based compensation expense   $ 1.3