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, 2023	Aug. 31, 2023	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2023	Nov. 30, 2022	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	$ 292,300				$ 292,300		$ 600,000
Stock repurchase program expiration date	May 31, 2021
Shares repurchased		131,858		0		254,283	303,079
Shares repurchased, value		$ 12,500	$ 12,500		$ 25,000	$ 25,000	$ 25,000
Repurchase of common stock price per shares		$ 94.8				$ 98.32	$ 82.49