Income Taxes (Consolidated Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Current income tax expense:
Federal	$ (37,030)	$ 25,549	$ 49,829
State	(5,021)	6,639	(1,546)
Foreign	41,616	57,156	20,858
Total current tax expense from continuing operations	(435)	89,344	69,141
Deferred income tax expense (benefit):
Federal	53,485	6,607	230,358
State	7,133	20,408	17,318
Foreign	(4,863)	(79,405)	8,815
Total deferred tax expense (benefit) from continuing operations	55,755	(52,390)	256,491
Consolidated income tax expense from continuing operations	$ 55,320	$ 36,954	$ 325,632