Income Taxes (Income Tax Benefit (Provision) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 32,329	$ 79,700
Effective tax rate	7.50%	24.90%
Benefit from extension for new energy efficient home credit	$ 69,200