Variable Interest Entities (Narrative) (Details) $ in Thousands	3 Months Ended
	Feb. 29, 2020 USD ($) entity	Nov. 30, 2019 USD ($)
Variable Interest Entity [Line Items]
Number of entities consolidated | entity	1
VIE assets consolidated	$ 49,400
VIE liabilities consolidated	900
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Increase in consolidated inventory	104,300
Variable Interest Entity, Not Primary Beneficiary Including Third Parties
Variable Interest Entity [Line Items]
Non-refundable option deposits and pre-acquisition costs	306,000	$ 320,500
Financial Standby Letters of Credit | Variable Interest Entity, Not Primary Beneficiary Including Third Parties
Variable Interest Entity [Line Items]
Letters of credit outstanding	$ 75,000	$ 75,012