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Employee Stock Plans - Additional Information (Detail)
1 Months Ended 12 Months Ended
Nov. 17, 2017
shares
Feb. 02, 2016
Jul. 30, 2014
shares
Aug. 31, 2017
USD ($)
quarter
shares
Aug. 31, 2016
USD ($)
shares
Aug. 31, 2015
USD ($)
shares
Jul. 31, 2015
shares
Aug. 31, 2014
USD ($)
quarter
shares
Mar. 31, 2014
USD ($)
shares
Jun. 30, 2018
shares
Jun. 29, 2018
$ / shares
Jul. 01, 2017
shares
Jul. 02, 2016
shares
Jun. 27, 2015
shares
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Number of shares issued under the ESPP (in shares)                   16,456,000   13,581,000 12,824,000 8,921,000
Closing stock price used in pre tax intrinsic value (in usd per share) | $ / shares                     $ 8.93      
Shares of common stock, option exercisable (in shares)                   1,054,000        
Common Stock                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Shares of common stock, option exercisable (in shares)                   600,000        
RSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Award vesting period         4 years   3 years              
Minimum | Restricted stock awards and units                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Award vesting period                   1 year        
Maximum | Restricted stock awards and units                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Award vesting period                   4 years        
the Incentive Plan                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Issuance of awards other than stock options being counted (in shares)     1.40                      
Stock awards, additional shares approved for grant (in shares) 8,000,000.0   6,000,000                      
Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Award vesting period                   2 years        
Granted performance stock units (in shares)       1,100,000 800,000 900,000   500,000 200,000          
Aggregate estimated grant date fair value of PSU | $       $ 9,500,000 $ 4,800,000 $ 2,500,000   $ 900,000 $ 500,000          
Number of Consecutive Quarters | quarter       4                    
Threshold amount, free cash flow | $         $ 25,000,000                  
Certain Executive Officers | RSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Granted performance stock units (in shares)       600,000.0 800,000.0   900,000              
Employees | RSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Granted performance stock units (in shares)       1,600,000.0 2,000,000.0   1,500,000              
Achievement of Revenue Threshold over 4 Consecutive Quarters through Fiscal 2020 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Threshold amount, revenue | $       $ 700,000,000.0                    
Percentage of shares that will vest (percent)       33.34%                    
Achievement of Free Cash Flow Threshold over 4 Consecutive Quarters through Fiscal 2020 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Threshold amount, free cash flow | $       $ 100,000,000                    
Percentage of shares that will vest (percent)       33.34%                    
Achievement of Revenue and Free Cash Flow Thresholds in any One Fiscal Year from 2018 to 2020 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Threshold amount, revenue | $       $ 800,000,000                    
Threshold amount, free cash flow | $       $ 100,000,000                    
Percentage of shares that will vest (percent)       33.34%                    
August 2018 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Percentage of shares that will vest (percent)       33.34%                    
August 10, 2016 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Percentage of shares that will vest (percent)                   33.40%        
Subsequent Quarter over the Next Two Years | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Percentage of shares that will vest (percent)                   8.325%        
August 10, 2017 | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Percentage of shares that will vest (percent)         25.00%                  
Subsequent Quarter over the Next Three Years | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Award vesting period         3 years                  
Percentage of shares that will vest (percent)       8.33% 6.25%                  
Achievement of 2 Consecutive Quarters with Positive AEBITDA | Certain Executive Officers | PSUs                            
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]                            
Number of Consecutive Quarters | quarter               2            
Performance target achieved (percent)   100.00%                        
Percentage of shares that will vest (percent)                   100.00%