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Notes Payable and Long-Term Debt - Schedule of Interest, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Debt Disclosure [Abstract]      
Interest expense $ 93,152 $ 84,925 $ 104,403
Interest-purchase of NCRA noncontrolling interest 34,810 70,843 149,087
Capitalized Interest (57,303) (8,528) (10,579)
Interest income (10,326) (6,987) (6,212)
Interest, net $ 60,333 $ 140,253 $ 236,699