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Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 30, 2017
Jul. 01, 2017
Jun. 30, 2018
Jul. 01, 2017
Sep. 30, 2018
Oct. 01, 2018
Jan. 31, 2018
Income Tax Examination [Line Items]                
Company's effective tax rate 7.20%   20.10% 67.00% 41.90%      
Income tax benefit for remeasurements of deferred tax deferred tax liability as result of change in tax rate $ 354.5              
Estimated net benefit effect of existing deferred tax balances and transition tax due to change in tax rate 354.5              
Provisional net benefit amount recorded for remeasurements of deferred tax balance due to change in rate 354.5              
Charge for transition taxes related to the deemed repatriation of foreign earnings $ 0.0 $ 26.0            
State and Local Jurisdiction [Member]                
Income Tax Examination [Line Items]                
Settlement liability of state tax audit               $ 11.0
State and Local Jurisdiction [Member] | Selling, General and Administrative Expenses [Member]                
Income Tax Examination [Line Items]                
Reversal of selling and administrative expense due to settlement of state tax audit   $ 4.0            
Scenario, Forecast [Member]                
Income Tax Examination [Line Items]                
Blended statutory income tax rate           24.50%    
Projected tax rate at which deferred tax assets and liabilities positions will reverse           24.50% 21.00%