Financial Services (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Nov. 30, 2014	Aug. 31, 2014	Nov. 30, 2013
Assets
Cash and cash equivalents	$ 354,879	$ 358,768	$ 299,008	$ 532,523
Receivables	159,576	125,488
Investments in unconsolidated joint ventures	72,800	79,441
Other assets	114,352	114,915
Total assets	4,948,496	4,757,550
Liabilities
Accounts payable and accrued expenses	675,762	582,598
Total liabilities	1,776	2,517
Financial services [Member]
Assets
Cash and cash equivalents	1,927	2,402	$ 1,950
Receivables	846	1,738
Investments in unconsolidated joint ventures	9,171	6,149
Other assets	91	197
Total assets	12,035	10,486
Liabilities
Accounts payable and accrued expenses	$ 1,776	$ 2,517