Stock-based Compensation - Schedule of Restricted Stock Unit Grants for the Period (Parenthetical) (Details) shares in Thousands	9 Months Ended
	Jun. 27, 2020 Installment shares
TSR Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	101
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	101
Number of equal annual installments | Installment	3
Service-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	2,159
Number of equal annual installments | Installment	3
Catch-Up Provision | TSR Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares	202