Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Feb. 14, 2018	Jun. 06, 2016
Equity, Class of Treasury Stock [Line Items]
Amount repurchased	$ 50,051	$ 9,547
2018 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount			$ 200,000
Amount repurchased (in shares)	869,949
Amount repurchased	$ 50,100
Average repurchase price (in dollars per share)	$ 57.53
Remaining authorized repurchase amount	$ 128,800
2016 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized repurchase amount				$ 150,000
Amount repurchased (in shares)		158,466
Amount repurchased		$ 9,500
Average repurchase price (in dollars per share)		$ 60.25