Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended								9 Months Ended
	Sep. 26, 2025	Jul. 18, 2025	Jan. 31, 2024	Aug. 31, 2025		Feb. 28, 2025		Nov. 30, 2024		Aug. 31, 2024	May 31, 2024	Aug. 31, 2025		Aug. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				$ 22,731,882		$ 28,021,225	[1]	$ 27,557,708		$ 27,015,753		$ 28,021,225	[1]	$ 26,701,966
Net earnings (including net earnings attributable to noncontrolling interests)				599,811						1,187,274		1,610,344		2,867,781
Employee stock and directors plans				15,563						10		(48,108)		(84,509)
Retirement of treasury stock												0
Purchases of treasury stock				(511,673)						(524,540)		(1,742,369)		(1,643,367)
Amortization of restricted stock				25,505						31,908		138,363		154,094
Cash dividends				(129,122)						(135,850)		(394,357)		(414,168)
Receipts related to noncontrolling interests				4,953						2,322		25,982		17,044
Payments related to noncontrolling interests				(1,812)						(19,173)		(7,777)		(45,819)
Millrose Properties, Inc. spin-off												(4,838,827)
Non-cash purchase or activity of noncontrolling interests, net				16,448						(440)		(11,411)		2,525
Total other comprehensive loss, net of tax										444		(1,510)		2,161
Balance, ending				22,751,555	[1]			28,021,225	[1]	27,557,708	$ 27,015,753	22,751,555	[1]	27,557,708
Additional shares authorized for repurchase, amount			$ 5,000,000
Additional Paid - in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				5,842,732		5,729,434		5,706,711		5,674,733		5,729,434		5,570,009
Employee stock and directors plans				16,291						70		17,680		1,282
Retirement of treasury stock												0
Amortization of restricted stock				25,505						31,908		138,363		154,094
Non-cash purchase or activity of noncontrolling interests, net				0						0		(949)		(18,674)
Balance, ending				5,884,528				5,729,434		5,706,711	5,674,733	5,884,528		5,706,711
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				(4,945,458)		(3,649,564)		(3,122,408)		(2,597,806)		(3,649,564)		(1,393,100)
Employee stock and directors plans				(745)						(62)		(65,943)		(85,941)
Purchases of treasury stock				(511,673)						(524,540)		(1,742,369)		(1,643,367)
Balance, ending				(5,457,876)				(3,649,564)		(3,122,408)	(2,597,806)	(5,457,876)		(3,122,408)
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				6,019		7,529		7,040		6,596		7,529		4,879
Total other comprehensive loss, net of tax										444		(1,510)		2,161
Balance, ending				6,019				7,529		7,040	6,596	6,019		7,040
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				21,645,991		25,753,078		24,791,519		23,764,695		25,753,078		22,369,368
Net earnings (including net earnings attributable to noncontrolling interests)				590,967						1,162,674		1,587,942		2,836,319
Cash dividends				(129,122)						(135,850)		(394,357)		(414,168)
Millrose Properties, Inc. spin-off												(4,838,827)
Balance, ending				22,107,836				25,753,078		24,791,519	23,764,695	22,107,836		24,791,519
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning				152,802		$ 151,090		145,188		137,879		151,090		121,302
Net earnings (including net earnings attributable to noncontrolling interests)				8,844						24,600		22,402		31,462
Receipts related to noncontrolling interests				4,953						2,322		25,982		17,044
Payments related to noncontrolling interests				(1,812)						(19,173)		(7,777)		(45,819)
Non-cash purchase or activity of noncontrolling interests, net				16,448						(440)		(10,462)		21,199
Balance, ending				$ 181,235				$ 151,090		$ 145,188	$ 137,879	$ 181,235		$ 145,188
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)				3,931,000						2,892,320		13,202,936		9,311,923
Total purchase price				$ 484,372						$ 447,845		$ 1,624,220		$ 1,445,909
Average share price of shares repurchased (in dollars per share)				$ 123.22						$ 154.84		$ 123.02		$ 155.27
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				$ 26,136		$ 25,998		$ 25,998		$ 25,996		$ 25,998		$ 25,848
Employee stock and directors plans				17						2		155		150
Retirement of treasury stock												0
Balance, ending				$ 26,153				$ 25,998		$ 25,998	$ 25,996	$ 26,153		$ 25,998
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)				188,066						462,906		851,386		1,243,303
Total purchase price				$ 22,154						$ 71,434		$ 101,779		$ 182,641
Average share price of shares repurchased (in dollars per share)				$ 117.80						$ 154.32		$ 119.55		$ 146.90
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		$ 3,660
Retirement of treasury stock												0
Balance, ending				3,660				$ 3,660		$ 3,660	$ 3,660	3,660		$ 3,660
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share Repurchase Program, Remaining Authorized, Amount				$ 1,700,000								$ 1,700,000

[1] As of August 31, 2025, total liabilities include $1.4 billion related to consolidated VIEs as to which there was no recourse against the Company, of which $39.0 million is included in Homebuilding accounts payable, $1.4 billion in Homebuilding liabilities related to consolidated inventory not owned, $6.0 million in Homebuilding senior notes and other debt payable, $1.3 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.