Quarterly report pursuant to Section 13 or 15(d)

Guarantor Subsidiaries - Additional Information (Details)

v3.7.0.1
Guarantor Subsidiaries - Additional Information (Details) - 5.625% Senior Notes - Senior Notes - USD ($)
May 31, 2017
Aug. 31, 2016
Apr. 16, 2012
Guarantor Obligations [Line Items]      
Debt Instrument, Face Amount     $ 300,000,000
Senior Notes, Noncurrent $ 287,600,000 $ 288,100,000  
Debt instrument, interest rate     5.625%