Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended				6 Months Ended
	Jan. 31, 2021	Nov. 30, 2024	Aug. 31, 2024	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2024	Nov. 30, 2023	May 31, 2021
Stock Repurchase Programs [Line Items]
Authorization of stock repurchase program						Jan. 08, 2008
Capital to be returned to stockholders through share repurchases								$ 1,000,000
Stock repurchase program, remaining authorized repurchase, value	$ 469,700	$ 227,300				$ 227,300		$ 600,000
Stock repurchase program expiration date	May 31, 2021
Shares repurchased		128,869		131,858		281,015	254,283
Shares repurchased, value		$ 17,500	$ 17,500	$ 12,500	$ 12,500	$ 35,000	$ 25,000
Repurchase of common stock price per shares		$ 135.79		$ 94.80		$ 124.55	$ 98.32