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Related Party Transactions (Details) - USD ($) shares in Millions, $ in Millions | Sep. 26, 2015 | Sep. 27, 2014 | Sep. 28, 2013
--- | --- | --- | ---
Equity, Class of Treasury Stock [Line Items] |  |  |
Short-term non-interest bearing loans outstanding to investment/profit sharing plan | $ 0.0 | $ 0.4 |
Shares authorized for repurchase |  |  | 4.0
Class B Common Stock |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Shares authorized for repurchase |  | 2.5 | 1.5
Purchase price of shares |  | $ 65.0 | $ 37.1

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