XML 59 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Selected Components of Operating Expenses (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Accounting Policies [Abstract]      
Research and development costs $ 704,317 $ 643,407 $ 625,541
Advertising costs 79,883 80,601 79,899
Provision for (release of) doubtful accounts (1) [1] $ 10,117 $ 15,312 $ (10,336)
[1] For additional information, see “Client Receivables, Unbilled Services and Allowances”.