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Stockholders' Deficit - Narrative (Details) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Mar. 17, 2020 $ / shares | Dec. 20, 2019 $ / shares | Jul. 05, 2020 USD ($) $ / shares shares | Apr. 12, 2020 shares | Jul. 07, 2019 USD ($) $ / shares | Jul. 05, 2020 USD ($) dividend $ / shares shares | Jul. 07, 2019 USD ($) $ / shares
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Shares repurchased | shares |  |  | 0 | 0 |  | 1,900,000 |
Shares repurchased, average price per share (in USD per share) | $ / shares |  |  |  |  |  | $ 81.41 |
Repurchases of common stock |  |  | $ 0 |  | $ 0 | $ 153,550 | $ 0
Repurchase of common stock, remaining authorized amount |  |  | $ 122,200 |  |  | 122,200 |
Stock repurchase transactions initiated in prior year |  |  |  |  |  | $ 2,000 |
Number of cash dividends declared | dividend |  |  |  |  |  | 2 |
Cash dividend (in USD per share) | $ / shares | $ 0.40 | $ 0.40 | $ 0 |  | $ 0.40 | $ 0.80 | $ 1.20
Total cash dividends |  |  |  |  |  | $ 18,500 |
Amount Expiring in November 2020 |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Repurchase of common stock, remaining authorized amount |  |  | $ 22,200 |  |  | 22,200 |
Amount Expiring in November 2021 |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Repurchase of common stock, remaining authorized amount |  |  | $ 100,000 |  |  | $ 100,000 |

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