Income Taxes (Narrative) (Details)	3 Months Ended		9 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	18.20%	16.50%	21.70%	26.30%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	8.40%		14.00%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	3.30%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	5.10%		2.30%