Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 04, 2020	Jun. 29, 2019	Jul. 04, 2020	Jun. 29, 2019	Aug. 20, 2019	Feb. 14, 2018
2019 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount					$ 50,000,000.0
Amount repurchased (in shares)	0		315,231
Amount repurchased			$ 19,500,000
Average repurchase price (in dollars per share)			$ 61.81
Remaining authorized repurchase amount	$ 27,200,000		$ 27,200,000
2018 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount						$ 200,000,000.0
Amount repurchased (in shares)		784,493		2,646,125
Amount repurchased		$ 44,400,000		$ 150,700,000
Average repurchase price (in dollars per share)		$ 56.61		$ 56.95