Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended					9 Months Ended
	Jan. 31, 2021	Feb. 29, 2024	Nov. 30, 2023	Aug. 31, 2023	Feb. 28, 2023	Aug. 31, 2022	Feb. 29, 2024	Feb. 28, 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	$ 279,800					$ 279,800		$ 600,000
Stock repurchase program expiration date	May 31, 2021
Shares repurchased		114,588			143,096		368,871	446,175
Shares repurchased, value		$ 12,488	$ 12,500	$ 12,500	$ 12,500	$ 25,000	$ 37,500	$ 37,500
Repurchase of common stock price per shares		$ 108.98			$ 87.35		$ 101.63	$ 84.05