Stockholders' Equity and Stock Compensation Plans - Stock Options (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Sep. 27, 2015
Number of Options (in thousands)
Outstanding at the beginning of the year (in shares)	2,367
Granted (in shares)	183
Exercised (in shares)	(791)
Forfeited (in shares)	(6)
Outstanding at the end of the period (in shares)	1,753	2,367
Vested or expected to vest at the end of the period (in shares)	1,696
Exercisable at the end of the period (in shares)	1,242
Weighted- Average Exercise Price per Share
Outstanding at the beginning of the year (in dollars per share)	$ 24.88
Granted (in dollars per share)	40.67
Exercised (in dollars per share)	44.19
Forfeited (in dollars per share)	17.72
Outstanding at the end of the period (in dollars per share)	27.18	$ 24.88
Vested or expected to vest at the end of the period (in dollars per share)	27.31
Exercisable at the end of the period (in dollars per share)	$ 25.10
Weighted- Average Remaining Contractual Term (in years)
Outstanding at the end of the period	4 years 7 months 2 days
Vested or expected to vest at the end of the period	4 years 6 months
Exercisable at the end of the period	3 years 5 months 5 days
Aggregate Intrinsic Value (in thousands)
Outstanding at the end of the period	$ 33,963
Vested or expected to vest at the end of the period	32,640
Exercisable at the end of the period	$ 26,636
Assumptions used in the Black-Scholes option-pricing model
Dividend yield (as a percent)	1.00%	1.20%	1.00%
Expected stock price volatility, minimum (as a percent)	36.10%	36.10%	36.20%
Expected stock price volatility, maximum (as a percent)	38.80%	38.80%	38.80%
Risk-free rate of return, annual, minimum (as a percent)	1.70%	1.60%	1.50%
Risk-free rate of return, annual, maximum (as a percent)	1.90%	1.80%	1.70%
Unrecognized compensation cost	$ 3,500
Weighted-average period to recognize the unrecognized compensation cost	2 years
Weighted-average fair value of stock options granted (in dollars per share)	$ 12.35	$ 8.05	$ 8.20
Aggregate intrinsic value of options exercised	$ 16,400	$ 7,300	$ 2,300
Net cash proceeds from the exercise of stock options	18,600	18,000	10,800
Income tax benefit realized from exercises of nonqualified stock options and disqualifying dispositions of qualified options	$ 4,900	$ 5,300	$ 3,000