Investment in Unconsolidated Affiliates - Partnerships Investments Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Activity of Investments in Unconsolidated Affiliates [Roll Forward]
Balance at the beginning of the period	$ 788,000	$ 346,197	$ 475,078	$ 352,070
Investments in its unconsolidated affiliates during the period	60	0	330,087	0
Equity in earnings in unconsolidated affiliates	9,359	5,024	9,965	5,429
Distributions from unconsolidated affiliates	(11,587)	(2,633)	(29,298)	(8,911)
Balance at the end of the period	$ 785,832	$ 348,588	$ 785,832	$ 348,588