Financial Services (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Thousands		Aug. 31, 2020	Nov. 30, 2019	Aug. 31, 2019	Nov. 30, 2018
Assets
Cash and cash equivalents		$ 723,126	$ 454,858	$ 184,837	$ 575,119
Receivables		269,651	249,055
Other assets		125,242	83,041
Total assets		5,177,427	5,015,482
Financial Service [Member]
Assets
Cash and cash equivalents		1,093	1,044	$ 1,043
Receivables		1,414	2,232
Investments in unconsolidated joint ventures		10,298	14,374
Other assets	[1]	21,956	20,746
Total assets		34,761	38,396
Liabilities
Accounts payable and accrued expenses		2,065	2,058
Total liabilities		2,065	2,058
Contract assets		$ 21,600	$ 20,600

[1] Other assets at August 31, 2020 and November 30, 2019 included $21.6 million and $20.6 million, respectively, of contract assets for estimated future renewal commissions related to then-existing insurance policies.