Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	Feb. 12, 2025	Jan. 31, 2024	Feb. 28, 2025		Nov. 30, 2024		Aug. 31, 2024	May 31, 2024	Feb. 29, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 28,021,225	[1]				$ 26,777,930	$ 26,701,966
Net earnings (including net earnings attributable to noncontrolling interests)			528,713						719,921
Employee stock and directors plans			(64,393)						(83,473)
Purchases of treasury stock			(709,715)						(511,557)
Amortization of restricted stock			84,085						87,680
Cash dividends			(131,646)						(139,387)
Receipts related to noncontrolling interests			11,328						5,796
Payments related to noncontrolling interests			(5,389)						(1,979)
Stockholders' Equity Note, Spinoff Transaction			(4,838,827)
Non-cash purchase or activity of noncontrolling interests, net			(27,859)						(1,399)
Total other comprehensive loss, net of tax			(178)						362
Balance, ending			22,867,344	[1]	$ 28,021,225	[1]			26,777,930
Additional shares authorized for repurchase, amount		$ 5,000,000
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			5,729,434					5,651,836	5,570,009
Employee stock and directors plans			232						(65)
Amortization of restricted stock			84,085						87,680
Non-cash purchase or activity of noncontrolling interests, net			(949)						(5,788)
Balance, ending			5,812,802		5,729,434				5,651,836
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			(3,649,564)					(1,988,200)	(1,393,100)
Employee stock and directors plans			(64,760)						(83,543)
Purchases of treasury stock			(709,715)						(511,557)
Balance, ending			(4,424,039)		(3,649,564)				(1,988,200)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			7,529					5,241	4,879
Total other comprehensive loss, net of tax			(178)						362
Balance, ending			7,351		7,529				5,241
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			25,753,078					22,949,315	22,369,368
Net earnings (including net earnings attributable to noncontrolling interests)			519,526						719,334
Cash dividends			(131,646)						(139,387)
Stockholders' Equity Note, Spinoff Transaction			(4,838,827)
Balance, ending			21,302,131		25,753,078				22,949,315
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			151,090					$ 130,095	121,302
Net earnings (including net earnings attributable to noncontrolling interests)			9,187						587
Receipts related to noncontrolling interests			11,328						5,796
Payments related to noncontrolling interests			(5,389)						(1,979)
Non-cash purchase or activity of noncontrolling interests, net			(26,910)						4,389
Balance, ending			$ 139,306		$ 151,090				$ 130,095
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)					$ 0.50		$ 0.50	$ 0.50	$ 0.50
Cash dividend paid (in dollars per share)	$ 0.50				$ 0.50		0.50	$ 0.50	$ 0.50
Shares repurchased during period (in shares)			4,770,000						3,026,128
Total purchase price			$ 644,618						$ 454,788
Average share price of shares repurchased (in dollars per share)			$ 135.14						$ 150.29
Common Class A | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 25,998					$ 25,983	$ 25,848
Employee stock and directors plans			135						135
Balance, ending			$ 26,133		$ 25,998				$ 25,983
Common Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)					$ 0.50		0.50	$ 0.50	$ 0.50
Cash dividend paid (in dollars per share)	$ 0.50				$ 0.50		$ 0.50	$ 0.50	$ 0.50
Shares repurchased during period (in shares)			458,805						373,872
Total purchase price			$ 58,121						$ 51,637
Average share price of shares repurchased (in dollars per share)			$ 126.68						$ 138.11
Share Repurchase Program, Remaining Authorized, Amount			$ 2,700,000
Common Class B | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			3,660					$ 3,660	$ 3,660
Balance, ending			$ 3,660		$ 3,660				$ 3,660

[1] As of February 28, 2025, total liabilities include $2.4 billion related to consolidated VIEs as to which there was no recourse against the Company, of which $67.8 million is included in Homebuilding accounts payable, $2.3 billion in Homebuilding liabilities related to consolidated inventory not owned, $6.0 million in Homebuilding senior notes and other debt payable, $0.8 million in Homebuilding other liabilities, and $1.0 million in Multifamily liabilities. As of November 30, 2024, total liabilities include $2.7 billion related to consolidated VIEs as to which there was no recourse against the Company, of which $67.3 million is included in Homebuilding accounts payable, $2.6 billion in Homebuilding liabilities related to consolidated inventory not owned, $6.0 million in Homebuilding senior notes and other debts payable, net, $45.8 million in Homebuilding other liabilities, and $1.0 million in Multifamily liabilities.