Financial Services (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Thousands	May 31, 2018	Nov. 30, 2017	May 31, 2017	Nov. 30, 2016
Assets
Cash and cash equivalents	$ 670,554	$ 720,861	$ 349,372	$ 593,000
Receivables	275,620	244,213
Investments in unconsolidated joint ventures	69,015	64,794
Other assets	111,024	102,498
Total assets	5,094,736	5,041,515
Liabilities
Accounts payable and accrued expenses	825,021	789,393
Total liabilities	1,224	966
Financial services [Member]
Assets
Cash and cash equivalents	756	231	$ 784
Receivables	1,535	1,724
Investments in unconsolidated joint ventures	6,973	10,340
Other assets	44	62
Total assets	9,308	12,357
Liabilities
Accounts payable and accrued expenses	$ 1,224	$ 966