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Equity Plans - Share Based Compensation Plan Information (Details) - $ / shares
shares in Millions
3 Months Ended 9 Months Ended
May 31, 2018
Jun. 01, 2017
May 31, 2018
Jun. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares available for future awards (in shares) 127   127  
Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]        
Stock options granted (in shares) 0 1 2 7
Weighted-average grant-date fair value per share (in dollars per share) $ 24.14 $ 11.64 $ 18.61 $ 8.59
Average expected life in years 5 years 5 months 5 years 6 months 5 years 6 months 5 years 6 months
Weighted-average expected volatility (in hundredths) 45.00% 44.00% 44.00% 46.00%
Weighted-average risk-free interest rate (in thousandths) 2.80% 2.00% 2.20% 1.80%
Expected dividend yield (in thousandths) 0.00% 0.00% 0.00% 0.00%
Restricted stock award        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]        
Restricted stock awards granted (in shares) 0 0 4 8
Weighted-average grant-date fair value per share (in dollars per share) $ 53.77 $ 27.75 $ 42.14 $ 19.10
Employee stock purchase plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares available for future awards (in shares) 33   33  
Share-based Compensation Arrangement by Share-based Payment Award, Additional ESPP General Disclosures [Abstract]        
ESPP maximum percentage of eligible compensation 10.00%   10.00%  
ESPP purchase price of common stock, percent, first or last trading day of offering period     85.00%  
ESPP offering period     6 months