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]
Amortization of interest rate locks, net of tax	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, 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]
Amortization of interest rate locks, net of tax	$ 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	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)				(375,515)