Accounting Developments - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Nov. 30, 2017	Nov. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash used in operating activities	$ 146,911	$ (961,657)
Member's paid-in capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax Cuts and Jobs Act adjustment	$ 7,555		$ 0
Cumulative effect of the adoption of the new revenue standard			6,121	$ 0
Accounting Standards Update 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash used in operating activities		$ 45,900
Accounting Standards Update 2014-09 | Member's paid-in capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of the adoption of the new revenue standard			$ 6,100