Operating and Reporting Segments (Homebuilding Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Segment Reporting Information [Line Items]
Revenues	$ 4,505,337	$ 3,868,082
Operating earnings (loss)	510,399	398,467
Homebuilding
Segment Reporting Information [Line Items]
Revenues	4,172,116	3,623,721
Operating Segments | East
Segment Reporting Information [Line Items]
Revenues	1,406,866	1,226,814
Operating earnings (loss)	175,005	135,383
Operating Segments | Central
Segment Reporting Information [Line Items]
Revenues	534,976	435,067
Operating earnings (loss)	29,472	30,926
Operating Segments | Texas
Segment Reporting Information [Line Items]
Revenues	473,228	418,517
Operating earnings (loss)	53,073	32,278
Operating Segments | West
Segment Reporting Information [Line Items]
Revenues	1,748,769	1,540,896
Operating earnings (loss)	224,907	190,661
Operating Segments | Other
Segment Reporting Information [Line Items]
Revenues	8,277	2,427
Operating earnings (loss)	(22,059)	(19,653)
Operating Segments | Homebuilding
Segment Reporting Information [Line Items]
Revenues	4,172,116	3,623,721
Operating earnings (loss)	460,398	369,595
Operating Segments And Corporate | Homebuilding
Segment Reporting Information [Line Items]
Revenues	4,172,116	3,623,721
Operating earnings (loss)	$ 460,398	$ 369,595