Fair Value Disclosures (Fair Value Hierarchy, Carrying Values, and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands		Aug. 31, 2017	Nov. 30, 2016
Carrying Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Debt, Fair Value Disclosures	[1]	$ 228,272	$ 227,379
Carrying Value | Level 2 | Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Fair Value	[1]	2,249,965	2,345,843
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure		32,300	39,500
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Debt, Fair Value Disclosures		237,475	223,675
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 | Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Fair Value		2,460,581	2,494,844
Fair Value, Measurements, Nonrecurring [Member] | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, Fair Value Disclosure	[1]	$ 0	$ 3,657

[1] Amounts represent the aggregate fair value for real estate assets impacted by inventory impairment charges during the applicable period as of the date the fair value measurements were made. The carrying value for these real estate assets may have subsequently increased or decreased from the fair value reflected due to activity that has occurred since the measurement date.