Stockholders' Deficit (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	4 Months Ended
	Jan. 19, 2020	Jan. 20, 2019
Equity, Class of Treasury Stock [Line Items]
Shares repurchased	1.9
Shares repurchased, average price per share	$ 81.41
Repurchases of common stock	$ 153,550	$ 0
Repurchase of common stock, remaining authorized amount	122,200
Stock repurchase transactions initiated in prior year	$ 2,000
Cash dividend (in USD per share)	$ 0.40	$ 0.40
Dividends	$ 9,400
Amount Expiring in November 2020
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	22,200
Amount Expiring in November 2021
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	$ 100,000