Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended					6 Months Ended
	Jun. 20, 2024	May 08, 2024	Jan. 31, 2024	May 31, 2024		Feb. 29, 2024		May 31, 2023	May 31, 2024		May 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				$ 26,777,930		$ 26,701,966	[1]	$ 24,555,287	$ 26,701,966	[1]	$ 24,240,367
Net earnings (including net earnings attributable to noncontrolling interests)				960,586				877,742	1,680,507		1,477,050
Employee stock and directors plans				(1,046)				4,229	(84,519)		(62,761)
Purchases of treasury stock				(607,270)				(209,928)	(1,118,827)		(400,859)
Amortization of restricted stock				34,506				40,173	122,186		126,731
Cash dividends				(138,931)				(110,386)	(278,318)		(218,277)
Receipts related to noncontrolling interests				8,926				2,421	14,722		4,918
Payments related to noncontrolling interests				(24,667)					(26,646)		(20,623)
Non-cash purchase or activity of noncontrolling interests, net				4,364				1,008	2,965		13,149
Total other comprehensive income, net of tax				1,355				573	1,717		1,424
Balance, ending				27,015,753	[1]	26,777,930		25,161,119	27,015,753	[1]	25,161,119
Additional shares authorized for repurchase, amount			$ 5,000,000
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				5,651,836		5,570,009		5,503,789	5,570,009		5,417,796
Employee stock and directors plans				1,277				1,631	1,212		1,442
Amortization of restricted stock				34,506				40,173	122,186		126,731
Non-cash purchase or activity of noncontrolling interests, net				(12,886)				535	(18,674)		159
Balance, ending				5,674,733		5,651,836		5,546,128	5,674,733		5,546,128
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				(1,988,200)		(1,393,100)		(468,347)	(1,393,100)		(210,389)
Employee stock and directors plans				(2,336)				2,589	(85,879)		(64,438)
Purchases of treasury stock				(607,270)				(209,928)	(1,118,827)		(400,859)
Balance, ending				(2,597,806)		(1,988,200)		(675,686)	(2,597,806)		(675,686)
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				5,241		4,879		3,259	4,879		2,408
Total other comprehensive income, net of tax				1,355				573	1,717		1,424
Balance, ending				6,596		5,241		3,832	6,596		3,832
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				22,949,315		22,369,368		19,350,060	22,369,368		18,861,417
Net earnings (including net earnings attributable to noncontrolling interests)				954,311				871,694	1,673,645		1,468,228
Cash dividends				(138,931)				(110,386)	(278,318)		(218,277)
Balance, ending				23,764,695		22,949,315		20,111,368	23,764,695		20,111,368
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				130,095		121,302		137,032	121,302		139,867
Net earnings (including net earnings attributable to noncontrolling interests)				6,275				6,048	6,862		8,822
Receipts related to noncontrolling interests				8,926				2,421	14,722		4,918
Payments related to noncontrolling interests				(24,667)					(26,646)		(20,623)
Non-cash purchase or activity of noncontrolling interests, net				17,250				473	21,639		12,990
Balance, ending				$ 137,879		$ 130,095		$ 145,974	$ 137,879		$ 145,974
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)						$ 0.375
Cash dividend paid (in dollars per share)		$ 0.50				$ 0.375
Shares repurchased during period (in shares)				3,393,475				1,269,681	6,419,603		2,715,886
Total purchase price				$ 543,276				$ 138,800	$ 998,064		$ 281,868
Average share price of shares repurchased (in dollars per share)				$ 160.09				$ 109.32	$ 155.47		$ 103.78
Common Class A | Subsequent Event
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)	$ 0.50
Common Class A | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				$ 25,983		$ 25,848		$ 25,834	$ 25,848		$ 25,608
Employee stock and directors plans				13				9	148		235
Balance, ending				$ 25,996		$ 25,983		$ 25,843	$ 25,996		$ 25,843
Common Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)						$ 0.375
Cash dividend paid (in dollars per share)		$ 0.50				$ 0.375
Shares repurchased during period (in shares)				406,525				730,319	780,397		1,284,114
Total purchase price				$ 59,570				$ 69,010	$ 111,207		$ 115,116
Average share price of shares repurchased (in dollars per share)				$ 146.54				$ 94.49	$ 142.50		$ 89.65
Common Class B | Subsequent Event
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared (in dollars per share)	$ 0.50
Common Class B | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				$ 3,660		$ 3,660		$ 3,660	$ 3,660		$ 3,660
Balance, ending				$ 3,660		$ 3,660		$ 3,660	$ 3,660		$ 3,660

[1] As of May 31, 2024, total liabilities include $2.1 billion related to consolidated VIEs as to which there was no recourse against the Company, of which $56.1 million is included in Homebuilding accounts payable, $2.0 billion in Homebuilding liabilities related to consolidated inventory not owned, $6.0 million in Homebuilding senior notes and other debt payable, $46.7 million in Homebuilding other liabilities, and $0.9 million in Multifamily liabilities. As of November 30, 2023, total liabilities include $1.2 billion related to consolidated VIEs as to which there was no recourse against the Company, of which $53.7 million is included in Homebuilding accounts payable, $1.1 billion in Homebuilding liabilities related to consolidated inventory not owned, $38.1 million in Homebuilding other liabilities, and $4.1 million in Multifamily liabilities.