Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.19.3
Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Millions
Aug. 31, 2019
Aug. 31, 2018
5.625% Senior Notes | Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt $ 291.5 $ 293.5
Fair Value, Inputs, Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign Currency Contracts Net Assets (Liabilities) Fair Value Disclosure $ 0.1 $ 0.4