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 income (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	1,364,025
Comprehensive income (loss), net of tax	(34,151)
Repurchase of common stock	(678,129)
Ending balance (in shares) at Feb. 28, 2025		776,172
Ending balance at Feb. 28, 2025	4,592,248	$ 2,525,876	11,507,826	57,050	$ (9,498,504)
Ending balance (in shares) at Feb. 28, 2025					(372,503)
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 income (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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	463,497		463,497
Comprehensive income (loss), net of tax	(11,475)			(11,475)
Dividends	(158,195)		(158,195)
Stock-based compensation	31,802	$ 31,802
Vesting of stock-based compensation awards (in shares)		30
Stock options exercised (in shares)		378			101
Stock options exercised	124	$ 19,761			$ (19,637)
Repurchase of common stock (in shares)					(134)
Repurchase of common stock	(26,611)				$ (26,611)
Ending balance (in shares) at Feb. 28, 2025		776,172
Ending balance at Feb. 28, 2025	$ 4,592,248	$ 2,525,876	11,507,826	57,050	$ (9,498,504)
Ending balance (in shares) at Feb. 28, 2025					(372,503)
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 income (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	$ 1,488,979
Comprehensive income (loss), net of tax	(8,236)
Repurchase of common stock	$ (933,227)
Ending balance (in shares) at Feb. 28, 2026	779,263	779,263
Ending balance at Feb. 28, 2026	$ 4,788,383	$ 2,807,548	12,743,710	76,153	$ (10,839,028)
Ending balance (in shares) at Feb. 28, 2026	(379,248)				(379,248)
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 income (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
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	502,496		502,496
Comprehensive income (loss), net of tax	8,427			8,427
Dividends	(180,636)		(180,636)
Stock-based compensation	34,249	$ 34,249
Vesting of stock-based compensation awards (in shares)		4
Stock options exercised (in shares)		474			153
Stock options exercised	60	$ 29,372			$ (29,312)
Repurchase of common stock (in shares)					(165)
Repurchase of common stock	$ (31,560)				$ (31,560)
Ending balance (in shares) at Feb. 28, 2026	779,263	779,263
Ending balance at Feb. 28, 2026	$ 4,788,383	$ 2,807,548	$ 12,743,710	$ 76,153	$ (10,839,028)
Ending balance (in shares) at Feb. 28, 2026	(379,248)				(379,248)