Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	Sep. 01, 2019	Aug. 31, 2019	Nov. 30, 2018	Aug. 31, 2018
Accounts Payable and Accrued Liabilities [Line Items]
Trade payables	$ 237,670		$ 302,009
Other accrued liabilities	107,457		108,939
Operating lease liabilities	38,397	$ 41,600
Accrued payroll and related liabilities	91,960		106,669
Accrued warranty	47,110		46,678	$ 26,264	$ 27,395
Income taxes payable	5,195		4,065
Accounts payable and accrued liabilities	$ 527,789		$ 568,360