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Share-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Oct. 02, 2020
Sep. 28, 2018
Oct. 02, 2020
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Dec. 01, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Allocated share-based compensation expense     $ 30,300 $ 55,300 $ 88,300    
Forfeiture rate 9.00% 6.40%       8.70%  
Performance Stock Units (PSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Allocated share-based compensation expense     (17,800) 9,900 $ 43,700    
2013 Stock Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized             25,500,000
2018 and 2019 PSU Grants | Performance Stock Units (PSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Allocated share-based compensation expense     $ (29,800)        
2018 PSU Grants | Performance Stock Units (PSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized 100,000   100,000        
Allocated share-based compensation expense     $ (3,900) $ (6,600)