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Stockholders' Deficit (Details) $ / shares in Units, $ in Thousands, shares in Millions |  |  |  | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2020 $ / shares | Feb. 18, 2020 $ / shares | Nov. 05, 2019 $ / shares | Jan. 19, 2020 USD ($) $ / shares shares | Sep. 27, 2020 USD ($) shares | Sep. 27, 2020 USD ($) restaurant $ / shares | Sep. 29, 2019 USD ($) $ / shares | Sep. 30, 2018 USD ($) $ / shares
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Shares repurchased (in shares) | shares |  |  |  | 1.9 | 0.0 |  |  |
Shares repurchased, average price per share (in usd per share) | $ / shares |  |  |  | $ 81.41 |  |  |  |
Cost of shares repurchased |  |  |  | $ 153,500 |  | $ 153,550 | $ 125,317 | $ 340,000
Remaining amount under stock repurchase program |  |  |  |  | $ 122,200 | 122,200 |  |
Stock repurchase transactions initiated in prior fiscal year |  |  |  |  |  | $ 2,000 |  |
Number of cash dividends declared | restaurant |  |  |  |  |  | 3 |  |
Amount of each of the three cash dividends declared per common share (in usd per share) | $ / shares | $ 0.40 | $ 0.40 | $ 0.40 |  |  | $ 1.20 | $ 1.60 | $ 1.60
Total cash dividends |  |  |  |  |  | $ 27,700 |  |
Amount Expiring in November 2020 |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Remaining amount under stock repurchase program |  |  |  |  | 22,200 | 22,200 |  |
Amount Expiring in November 2021 |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Remaining amount under stock repurchase program |  |  |  |  | $ 100,000 | $ 100,000 |  |

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