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MATERIAL TRANSACTIONS AFFECTING SHAREHOLDERS' EQUITY - Dividend Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Dividends [Line Items]      
Cancellation of treasury shares $ 0 $ 0  
Dividend Per Share $ 2.42 $ 2.20 $ 2.04
Cash Outlay $ 1,567,578    
DividendPaymentNovember2016 [Member]      
Dividends [Line Items]      
Dividend Payment Date Day Month And Year Nov. 15, 2016    
Dividend Per Share $ 1.21    
Cash Outlay $ 785,127    
DividendPaymentMay2017 [Member]      
Dividends [Line Items]      
Dividend Payment Date Day Month And Year May 15, 2017    
Dividend Per Share $ 1.21    
Cash Outlay $ 782,451    
Accenture Holdings plc Ordinary Shares and Accenture Canada Holdings Inc Exchangeable Shares      
Dividends [Line Items]      
Cash Outlay $ 68,844    
Accenture Holdings plc Ordinary Shares and Accenture Canada Holdings Inc Exchangeable Shares | DividendPaymentNovember2016 [Member]      
Dividends [Line Items]      
Dividend Payment Date Of Record Day Month And Year Oct. 18, 2016    
Cash Outlay $ 34,990    
Accenture Holdings plc Ordinary Shares and Accenture Canada Holdings Inc Exchangeable Shares | DividendPaymentMay2017 [Member]      
Dividends [Line Items]      
Dividend Payment Date Of Record Day Month And Year Apr. 10, 2017    
Cash Outlay $ 33,854    
Accenture plc Class A Ordinary Shares      
Dividends [Line Items]      
Cash Outlay $ 1,498,734    
Accenture plc Class A Ordinary Shares | DividendPaymentNovember2016 [Member]      
Dividends [Line Items]      
Dividend Payment Date Of Record Day Month And Year Oct. 21, 2016    
Cash Outlay $ 750,137    
Accenture plc Class A Ordinary Shares | DividendPaymentMay2017 [Member]      
Dividends [Line Items]      
Dividend Payment Date Of Record Day Month And Year Apr. 13, 2017    
Cash Outlay $ 748,597    
Treasury Shares      
Dividends [Line Items]      
Cancellation of treasury shares $ 3,014,356 $ 11,199,016