CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock and Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Beginning balance (in shares) at May. 31, 2024		773,097
Beginning balance at May. 31, 2024	$ 4,316,372	$ 2,305,301	$ 10,617,955	$ 91,201	$ (8,698,085)
Beginning balance (in shares) at May. 31, 2024					(368,089)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	452,033		452,033
Comprehensive loss, net of tax	(7,823)			(7,823)
Dividends	(157,955)		(157,955)
Stock-based compensation	33,367	$ 33,367
Vesting of stock-based compensation awards (in shares)		792
Stock options exercised (in shares)		1,342			407
Stock options exercised	231	$ 77,055			$ (76,824)
Repurchase of common stock (in shares)					(3,476)
Repurchase of common stock	(614,802)				$ (614,802)
Ending balance (in shares) at Aug. 31, 2024		775,231
Ending balance at Aug. 31, 2024	4,021,423	$ 2,415,723	10,912,033	83,378	$ (9,389,711)
Ending balance (in shares) at Aug. 31, 2024					(371,972)
Beginning balance (in shares) at May. 31, 2024		773,097
Beginning balance at May. 31, 2024	4,316,372	$ 2,305,301	10,617,955	91,201	$ (8,698,085)
Beginning balance (in shares) at May. 31, 2024					(368,089)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	900,528
Comprehensive loss, net of tax	(22,676)
Repurchase of common stock	(651,518)
Ending balance (in shares) at Nov. 30, 2024		775,764
Ending balance at Nov. 30, 2024	4,293,106	$ 2,474,313	11,202,524	68,525	$ (9,452,256)
Ending balance (in shares) at Nov. 30, 2024					(372,268)
Beginning balance (in shares) at Aug. 31, 2024		775,231
Beginning balance at Aug. 31, 2024	4,021,423	$ 2,415,723	10,912,033	83,378	$ (9,389,711)
Beginning balance (in shares) at Aug. 31, 2024					(371,972)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	448,495		448,495
Comprehensive loss, net of tax	(14,853)			(14,853)
Dividends	(158,004)		(158,004)
Stock-based compensation	32,417	$ 32,417
Vesting of stock-based compensation awards (in shares)		14
Stock options exercised (in shares)		519			122
Stock options exercised	344	$ 26,173			$ (25,829)
Repurchase of common stock (in shares)					(174)
Repurchase of common stock	(36,716)				$ (36,716)
Ending balance (in shares) at Nov. 30, 2024		775,764
Ending balance at Nov. 30, 2024	$ 4,293,106	$ 2,474,313	11,202,524	68,525	$ (9,452,256)
Ending balance (in shares) at Nov. 30, 2024					(372,268)
Beginning balance (in shares) at May. 31, 2025	776,936	776,936
Beginning balance at May. 31, 2025	$ 4,684,481	$ 2,593,479	11,798,451	84,389	$ (9,791,838)
Beginning balance (in shares) at May. 31, 2025	(373,988)				(373,988)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 491,140		491,140
Comprehensive loss, net of tax	(4,500)			(4,500)
Dividends	(182,341)		(182,341)
Stock-based compensation	30,348	$ 30,348
Vesting of stock-based compensation awards (in shares)		511
Stock options exercised (in shares)		1,018			304
Stock options exercised	2,669	$ 70,250			$ (67,581)
Repurchase of common stock (in shares)					(1,223)
Repurchase of common stock	(266,097)				$ (266,097)
Ending balance (in shares) at Aug. 31, 2025		778,465
Ending balance at Aug. 31, 2025	$ 4,755,700	$ 2,694,077	12,107,250	79,889	$ (10,125,516)
Ending balance (in shares) at Aug. 31, 2025					(375,515)
Beginning balance (in shares) at May. 31, 2025	776,936	776,936
Beginning balance at May. 31, 2025	$ 4,684,481	$ 2,593,479	11,798,451	84,389	$ (9,791,838)
Beginning balance (in shares) at May. 31, 2025	(373,988)				(373,988)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 986,483
Comprehensive loss, net of tax	(16,663)
Repurchase of common stock	$ (901,667)
Ending balance (in shares) at Nov. 30, 2025	778,785	778,785
Ending balance at Nov. 30, 2025	$ 4,455,347	$ 2,743,927	12,421,850	67,726	$ (10,778,156)
Ending balance (in shares) at Nov. 30, 2025	(378,930)				(378,930)
Beginning balance (in shares) at Aug. 31, 2025		778,465
Beginning balance at Aug. 31, 2025	$ 4,755,700	$ 2,694,077	12,107,250	79,889	$ (10,125,516)
Beginning balance (in shares) at Aug. 31, 2025					(375,515)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	495,343		495,343
Comprehensive loss, net of tax	(12,163)			(12,163)
Dividends	(180,743)		(180,743)
Stock-based compensation	32,353	$ 32,353
Vesting of stock-based compensation awards (in shares)		28
Stock options exercised (in shares)		292			90
Stock options exercised	427	$ 17,497			$ (17,070)
Repurchase of common stock (in shares)					(3,325)
Repurchase of common stock	$ (635,570)				$ (635,570)
Ending balance (in shares) at Nov. 30, 2025	778,785	778,785
Ending balance at Nov. 30, 2025	$ 4,455,347	$ 2,743,927	$ 12,421,850	$ 67,726	$ (10,778,156)
Ending balance (in shares) at Nov. 30, 2025	(378,930)				(378,930)