Employee Stock Purchase and Stock Incentive Plans (Information Regarding Options Outstanding, and Options Exercisable) (Details) - $ / shares	12 Months Ended
	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	706,489	926,606	1,766,759	2,516,825
Options Outstanding, Weighted Average Remaining Contractual Life (years)	3 years 10 months 17 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 45.91	$ 45.48	$ 45.53	$ 46.19
Options Exercisable, Number (in shares)	706,489
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 45.91
Range of exercise prices for options outstanding, minimum (in dollars per share)	32.51	32.51	32.51
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 60.43	$ 60.43	$ 60.43
$32.51 - $37.03
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	36,500
Options Outstanding, Weighted Average Remaining Contractual Life (years)	1 year 7 months 17 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 36.97
Options Exercisable, Number (in shares)	36,500
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 36.97
Range of exercise prices for options outstanding, minimum (in dollars per share)	32.51
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 37.03
$37.43 - $46.09
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	468,077
Options Outstanding, Weighted Average Remaining Contractual Life (years)	4 years 6 months 3 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 43.08
Options Exercisable, Number (in shares)	468,077
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 43.08
Range of exercise prices for options outstanding, minimum (in dollars per share)	37.43
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 46.09
$47.11 - $55.13
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	173,537
Options Outstanding, Weighted Average Remaining Contractual Life (years)	2 years 8 months 19 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 53.05
Options Exercisable, Number (in shares)	173,537
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 53.05
Range of exercise prices for options outstanding, minimum (in dollars per share)	47.11
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 55.13
$60.08 - $80.63
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number (in shares)	28,375
Options Outstanding, Weighted Average Remaining Contractual Life (years)	3 years 4 months 6 days
Options Outstanding, Weighted Average Price (in dollars per share)	$ 60.39
Options Exercisable, Number (in shares)	28,375
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 60.39
Range of exercise prices for options outstanding, minimum (in dollars per share)	60.08
Range of exercise prices for options outstanding, maximum (in dollars per share)	$ 80.63