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Subsequent Events (Narrative) (Details) (USD $)
3 Months Ended 0 Months Ended
Nov. 30, 2013
Nov. 30, 2012
Dec. 10, 2013
Subsequent Events [Member]
Subsequent Event [Line Items]      
Cash dividend declared $ 0.31 $ 0.29 $ 0.34
Dividend payable date     Jan. 31, 2014
Dividend payable record date     Jan. 06, 2014