Notes Payable, Long-Term Debt and Capital Lease Obligations (Details 2) - USD ($) $ in Thousands	Aug. 31, 2017	Aug. 31, 2016
Notes Payable, Long-Term Debt and Capital Lease Obligations [Abstract]
Total notes payable, long-term debt and capital lease obligations	$ 2,078,090	$ 2,119,822
Current installments of notes payable, long-term debt and capital lease obligations	445,498	45,810
Notes payable, long-term debt and capital lease obligations, less current installments	$ 1,632,592	$ 2,074,012