Stockholders' Equity (Schedule Of Changes In Equity) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended									6 Months Ended
	Jun. 25, 2026	Jan. 31, 2024	Aug. 31, 2026		May 31, 2026		Nov. 30, 2025		Aug. 31, 2025	May 31, 2025	Feb. 28, 2025	May 31, 2026		May 31, 2025
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			$ 21,765,726	[1]	$ 22,032,263				$ 22,731,882	$ 22,867,344	$ 28,021,225	$ 22,140,609	[1]	$ 28,021,225
Net earnings (including net earnings attributable to noncontrolling interests)					308,129					481,820		541,490		1,010,533
Employee stock and directors plans					(15,489)					722		(23,908)		(63,671)
Purchases of treasury stock					(451,305)					(520,981)		(690,802)		(1,230,696)
Amortization of restricted stock					26,271					28,773		88,648		112,858
Cash dividends					(123,057)					(133,589)		(246,537)		(265,235)
Receipts related to noncontrolling interests					1,460					9,701		2,543		21,029
Payments related to noncontrolling interests					(15,700)					(576)		(26,409)		(5,965)
Stockholders' Equity Note, Spinoff Transaction														(4,838,827)
Non-cash purchase or activity of noncontrolling interests, net					3,084							(19,573)		(27,859)
Total other comprehensive income, net of tax					70					(1,332)		(335)		(1,510)
Balance, ending					21,765,726	[1]	$ 22,140,609	[1]		22,731,882	22,867,344	21,765,726	[1]	22,731,882
Additional shares authorized for repurchase, amount		$ 5,000,000
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			6,020,306		5,993,733				5,842,732	5,812,802	5,729,434	5,909,726		5,729,434
Employee stock and directors plans					302					1,157		21,932		1,389
Amortization of restricted stock					26,271					28,773		88,648		112,858
Non-cash purchase or activity of noncontrolling interests, net					0							0		(949)
Balance, ending					6,020,306		5,909,726			5,842,732	5,812,802	6,020,306		5,842,732
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			(7,194,402)		(6,727,316)				(4,945,458)	(4,424,039)	(3,649,564)	(6,457,609)		(3,649,564)
Employee stock and directors plans					(15,781)					(438)		(45,991)		(65,198)
Purchases of treasury stock					(451,305)					(520,981)		(690,802)		(1,230,696)
Balance, ending					(7,194,402)		(6,457,609)			(4,945,458)	(4,424,039)	(7,194,402)		(4,945,458)
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			5,676		5,606				6,019	7,351	7,529	6,011		7,529
Total other comprehensive income, net of tax					70					(1,332)		(335)		(1,510)
Balance, ending					5,676		6,011			6,019	7,351	5,676		6,019
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			22,759,089		22,577,374				21,645,991	21,302,131	25,753,078	22,471,471		25,753,078
Net earnings (including net earnings attributable to noncontrolling interests)					304,772					477,449		534,155		996,975
Cash dividends					(123,057)					(133,589)		(246,537)		(265,235)
Stockholders' Equity Note, Spinoff Transaction														(4,838,827)
Balance, ending					22,759,089		22,471,471			21,645,991	21,302,131	22,759,089		21,645,991
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning			145,088		152,887				$ 152,802	139,306	151,090	181,192		151,090
Net earnings (including net earnings attributable to noncontrolling interests)					3,357					4,371		7,335		13,558
Receipts related to noncontrolling interests					1,460					9,701		2,543		21,029
Payments related to noncontrolling interests					(15,700)					(576)		(26,409)		(5,965)
Non-cash purchase or activity of noncontrolling interests, net					3,084							(19,573)		(26,910)
Balance, ending					$ 145,088		$ 181,192			$ 152,802	$ 139,306	$ 145,088		$ 152,802
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)					4,335,241					4,501,936		6,172,126		9,271,936
Total purchase price					$ 388,784					$ 495,230		$ 608,055		$ 1,139,849
Average share price of shares repurchased (in dollars per share)					$ 89.68					$ 110.00		$ 98.52		$ 122.94
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			$ 26,309		$ 26,319				$ 26,136	$ 26,133	$ 25,998	$ 26,158		$ 25,998
Employee stock and directors plans					(10)					3		151		138
Balance, ending					$ 26,309		$ 26,158			$ 26,136	$ 26,133	$ 26,309		$ 26,136
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)					664,759					204,515		827,874		663,320
Total purchase price					$ 57,954					$ 21,504		$ 75,770		$ 79,625
Average share price of shares repurchased (in dollars per share)					$ 87.18					$ 105.15		$ 91.52		$ 120.04
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		$ 3,660
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					$ 1,000,000							$ 1,000,000

[1] As of May 31, 2026, total liabilities include $920.2 million related to consolidated VIEs as to which there was no recourse against the Company, of which $9.3 million is included in Homebuilding accounts payable, $907.7 million in Homebuilding liabilities related to consolidated inventory not owned, $2.5 million in Homebuilding other liabilities, and $0.7 million in Multifamily liabilities. As of November 30, 2025, total liabilities include $962.4 million related to consolidated VIEs as to which there was no recourse against the Company, of which $23.8 million is included in Homebuilding accounts payable, $930.1 million in Homebuilding liabilities related to consolidated inventory not owned, $6.0 million in Homebuilding senior notes and other debts payable, net, $1.5 million in Homebuilding other liabilities, and $1.0 million in Multifamily liabilities.