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, 2022	Aug. 31, 2022	Nov. 30, 2021	Aug. 31, 2021	Nov. 30, 2022	Nov. 30, 2021	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	$ 342,300				$ 342,300		$ 600,000
Stock repurchase program expiration date	May 31, 2021
Shares repurchased		0		0		303,079	133,388
Shares repurchased, value			$ 25,000		$ 12,500	$ 25,000	$ 12,500
Repurchase of common stock price per shares						$ 82.49	$ 93.71