Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Aug. 31, 2017	Feb. 10, 2017	Nov. 30, 2016
Income Tax Disclosure [Abstract]
Deferred tax assets	$ 388,400		$ 277,400
Business Acquisition [Line Items]
Unrecognized tax benefits	12,300		12,300
Income tax penalties and interest accrued	48,800		$ 46,000
Income tax penalties and interest expense	3,200
Reduction to the accrual for interest and penalties	$ 400
WCI Communities, Inc.
Business Acquisition [Line Items]
Deferred tax assets, net		$ 84,078