Financial Services (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Thousands		Feb. 28, 2018	Nov. 30, 2017	Feb. 28, 2017	Nov. 30, 2016
Assets
Cash and cash equivalents		$ 560,806	$ 720,861	$ 352,450	$ 593,000
Receivables		250,472	244,213
Investments in unconsolidated joint ventures		68,176	64,794
Other assets		108,498	102,498
Total assets		4,957,101	5,041,515
Liabilities
Accounts payable and accrued expenses		743,912	789,393
Total liabilities		897	966
Financial services [Member]
Assets
Cash and cash equivalents		551	231	$ 570
Receivables		1,489	1,724
Investments in unconsolidated joint ventures	[1]	9,460	10,340
Other assets		57	62
Total assets		11,557	12,357
Liabilities
Accounts payable and accrued expenses		$ 897	$ 966

[1] February 28, 2018 November 30, 2017Assets Cash and cash equivalents$551 $231Receivables 1,489 1,724Investments in unconsolidated joint ventures 9,460 10,340Other assets57 62Total assets$11,557 $12,357Liabilities Accounts payable and accrued expenses$897 $966Total liabilities$897 $966