Quarterly report pursuant to Section 13 or 15(d)

Stock Repurchase Programs (Details)

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Stock Repurchase Programs (Details) - USD ($)
$ in Thousands, shares in Millions
9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Stock Repurchase Programs    
Stock repurchase programs, authorized amount   $ 275,000
Common shares repurchased 0.8 1.4
Common shares repurchased, cost $ 30,618 $ 60,950
Amount remaining available for future stock repurchases $ 105,100