Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 104,355	$ 179,140	$ 38,580
Acquisitions	0		137,912
Divestitures		(31,004)
Additions based on tax positions related to the current year	1,064	7,455	9,780
Additions for tax positions of prior years	7,472	1,994	5,561
Reductions for tax positions of prior years	(6,695)	(49,849)	(8,962)
Settlement	(3,712)	(3,381)	(3,731)
Balance, end of year	$ 102,484	$ 104,355	$ 179,140