Stockholders' Equity Stockholders' Equity(Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended			4 Months Ended	12 Months Ended
	Oct. 01, 2017	Jul. 09, 2017	Apr. 16, 2017	Jan. 22, 2017	Oct. 01, 2017	Oct. 02, 2016	Sep. 27, 2015	May 10, 2017	Sep. 22, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired					3.2
Treasury Stock, Value, Acquired, Cost Method					$ 327,153	$ 291,853	$ 317,051
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 181,000				181,000
Increase (Decrease) in Payables under Repurchase Agreements					$ (7,208)	$ 7,208	$ (3,112)
Common Stock, Dividends, Per Share, Declared	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 1.60	$ 1.20	$ 1.00
Dividends, Common Stock					$ 49,200
Expiration: November 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount								$ 100,000	$ 300,000
Treasury Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method					$ 327,153	$ 291,853	$ 317,051