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Shareholders' Equity	9 Months Ended
Shareholders' Equity	Jun. 30, 2018
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders' Equity On June 6, 2016, the Board of Directors approved a multi-year stock repurchase program under which the Company is authorized to repurchase up to $150.0 million of its common stock (the "2016 Share Repurchase Plan"). During the three months ended June 30, 2018, the Company repurchased 947,685 shares for approximately $56.7 million, at an average price of $59.81 per share. During the nine months ended June 30, 2018, the company repurchased 1,619,094 shares for approximately $97.8 million at an average price of $60.43 per share. During the three months ended July 1, 2017, the Company repurchased 189,891 shares for approximately $10.0 million, at an average price of $52.40 per share. During the nine months ended July 1, 2017, the company repurchased 457,702 shares for approximately $23.9 million at an average price of $52.12 per share. All of the purchases under the 2016 Share Repurchase Plan were recorded as treasury stock. As of June 30, 2018, $18.0 million of authority remained under the 2016 Share Repurchase Plan. On February 14, 2018, the Board of Directors approved a new stock repurchase plan under which the Company is authorized to repurchase $200.0 million of its common stock commencing upon completion of the 2016 Share Repurchase Plan (the "2018 Share Repurchase Plan"). No purchases have yet been made under the 2018 Share Repurchase Plan.