Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
BALANCE, SHARES at Feb. 28, 2022		161,054,000
BALANCE at Feb. 28, 2022	$ 5,235,439	$ 80,527	$ 1,677,268	$ 3,524,066	$ (46,422)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	252,265			252,265
Other Comprehensive Income (Loss), Net of Tax	52,314				52,314
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	21,594		21,594
Stock Repurchased and Retired During Period, Shares		(1,644,000)
Stock Repurchased and Retired During Period, Value	(157,594)	$ (822)	(17,207)	(139,565)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		49,000
Stock Issued During Period, Value, Stock Options Exercised	3,442	$ 24	3,418
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		155,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(6,823)	$ 78	(6,901)
BALANCE, SHARES at May. 31, 2022		159,614,000
BALANCE at May. 31, 2022	5,400,637	$ 79,807	1,678,172	3,636,766	5,892
BALANCE, SHARES at Feb. 28, 2022		161,054,000
BALANCE at Feb. 28, 2022	5,235,439	$ 80,527	1,677,268	3,524,066	(46,422)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	415,750
Other Comprehensive Income (Loss), Net of Tax	103,842
BALANCE, SHARES at Nov. 30, 2022		158,019,000
BALANCE at Nov. 30, 2022	5,487,573	$ 79,010	1,697,062	3,654,081	57,420
BALANCE, SHARES at May. 31, 2022		159,614,000
BALANCE at May. 31, 2022	5,400,637	$ 79,807	1,678,172	3,636,766	5,892
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	125,905			125,905
Other Comprehensive Income (Loss), Net of Tax	26,107				26,107
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	15,062		15,062
Stock Repurchased and Retired During Period, Shares		(1,730,000)
Stock Repurchased and Retired During Period, Value	(163,017)	$ (865)	(18,279)	(143,873)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		155,000
Stock Issued During Period, Value, Stock Options Exercised	9,840	$ 78	9,762
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		5,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(307)	$ 2	(309)
BALANCE, SHARES at Aug. 31, 2022		158,044,000
BALANCE at Aug. 31, 2022	5,414,227	$ 79,022	1,684,408	3,618,798	31,999
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	37,580			37,580
Other Comprehensive Income (Loss), Net of Tax	25,421				25,421
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	12,797		12,797
Stock Repurchased and Retired During Period, Shares		(30,000)
Stock Repurchased and Retired During Period, Value	(2,632)	$ (15)	(320)	(2,297)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		4,000
Stock Issued During Period, Value, Stock Options Exercised	220	$ 2	218
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		1,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(40)	$ 1	(41)
BALANCE, SHARES at Nov. 30, 2022		158,019,000
BALANCE at Nov. 30, 2022	$ 5,487,573	$ 79,010	1,697,062	3,654,081	57,420
BALANCE, SHARES at Feb. 28, 2023	158,079,033	158,079,000
BALANCE at Feb. 28, 2023	$ 5,613,077	$ 79,040	1,713,074	3,723,094	97,869
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	228,298			228,298
Other Comprehensive Income (Loss), Net of Tax	(36,539)				(36,539)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	21,274		21,274
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		18,000
Stock Issued During Period, Value, Stock Options Exercised	988	$ 9	979
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		112,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(3,930)	$ 56	(3,986)
BALANCE, SHARES at May. 31, 2023		158,209,000
BALANCE at May. 31, 2023	$ 5,823,168	$ 79,105	1,731,341	3,951,392	61,330
BALANCE, SHARES at Feb. 28, 2023	158,079,033	158,079,000
BALANCE at Feb. 28, 2023	$ 5,613,077	$ 79,040	1,713,074	3,723,094	97,869
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	428,936
Other Comprehensive Income (Loss), Net of Tax	$ (37,202)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	476,000
BALANCE, SHARES at Nov. 30, 2023	158,021,407	158,021,000
BALANCE at Nov. 30, 2023	$ 6,044,365	$ 79,011	1,786,924	4,117,763	60,667
BALANCE, SHARES at May. 31, 2023		158,209,000
BALANCE at May. 31, 2023	5,823,168	$ 79,105	1,731,341	3,951,392	61,330
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	118,635			118,635
Other Comprehensive Income (Loss), Net of Tax	17,267				17,267
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	20,256		20,256
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		446,000
Stock Issued During Period, Value, Stock Options Exercised	26,546	$ 223	26,323
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		1,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(213)	$ 0	(213)
BALANCE, SHARES at Aug. 31, 2023		158,656,000
BALANCE at Aug. 31, 2023	6,005,659	$ 79,328	1,777,707	4,070,027	78,597
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	82,003			82,003
Other Comprehensive Income (Loss), Net of Tax	(17,930)				(17,930)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	15,728		15,728
Stock Repurchased and Retired During Period, Shares		(649,000)
Stock Repurchased and Retired During Period, Value	(41,903)	$ (324)	(7,312)	(34,267)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		12,000
Stock Issued During Period, Value, Stock Options Exercised	896	$ 6	890
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		2,000
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ (88)	$ 1	(89)
BALANCE, SHARES at Nov. 30, 2023	158,021,407	158,021,000
BALANCE at Nov. 30, 2023	$ 6,044,365	$ 79,011	$ 1,786,924	$ 4,117,763	$ 60,667