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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 22, 2017
Oct. 01, 2017
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Sep. 29, 2018
Income Tax Disclosure [Abstract]              
Effective income tax rate     23.10% 25.80% 23.70% 56.40%  
U.S. federal corporate tax rate 21.00% 35.00%          
Transition Tax on Undistributed Foreign Earnings Deemed To Be Repatriated             $ 30,795
Withholding Taxes on Undistributed Foreign Earnings Deemed To Be Repatriated             10,383
Income tax benefit due to remeasurement of deferred tax assets and liabilities             $ 10,946