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Commitments and Contingencies (Details)
1 Months Ended 12 Months Ended
Aug. 12, 2019
statement
May 17, 2019
patent
May 01, 2019
patent
Oct. 05, 2018
statement
Jan. 03, 2018
executive
Nov. 06, 2019
patent
Aug. 31, 2020
USD ($)
Aug. 31, 2019
USD ($)
Aug. 31, 2018
USD ($)
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Purchase obligations in fiscal 2021             $ 301,500,000    
Purchase obligations in fiscal 2022             5,100,000    
Purchase obligations extending beyond August 31, 2022             $ 0    
Standard product warranty period             5 years    
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]                  
Beginning balance             $ 11,500,000 $ 27,300,000 $ 22,000,000.0
Warranty and recall costs             32,000,000.0 18,700,000 32,400,000
Payments and other deductions             (27,500,000) (19,700,000) (27,700,000)
Acquired warranty and recall liabilities             100,000 0 600,000
ASC 606 adjustments             0 (14,800,000) 0
Ending balance             $ 16,100,000 $ 11,500,000 $ 27,300,000
Lighting Science Group Patent Litigation                  
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Number of patents under alleged infringement claims (patents) | patent     8     3      
Number of patents under dropped claims (patents) | patent   1       4      
Securities Class Action                  
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Number of initial claims under class action | statement 42                
Number of claims dismissed | statement       47          
Number of claims allowed | statement 5                
Securities Class Action | Former Executive                  
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Number of former executives accused | executive         1        
Total work force covered by collective bargaining agreements                  
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Portion of revenues (percent)             67.00%    
Workforce subject to Collective bargaining arrangements expiring within one year                  
Recorded Unconditional Purchase Obligation, Fiscal Year Maturity Schedule [Abstract]                  
Portion of revenues (percent)             59.00%