Assets Acquired and Liabilities Assumed on Acquisition (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2024	May 31, 2023	May 31, 2022
Acquisitions
Goodwill		$ 1,308,911	$ 1,293,588	$ 1,337,868
2024 Acquisitions
Acquisitions
Current assets		6,010
Property, plant and equipment		1,427
Goodwill		11,993
Trade names - indefinite lives		0
Other intangible assets		2,562
Other long-term assets		4
Total Assets Acquired		21,996
Liabilities assumed		(5,712)
Net Assets Acquired	[1]	$ 16,284
Weighted-average other intangible asset amortization life (in years)		10 years
2023 Acquisitions
Acquisitions
Current assets			17,508
Property, plant and equipment			3,605
Goodwill			25,407
Trade names - indefinite lives			3,168
Other intangible assets			14,965
Other long-term assets			1,647
Total Assets Acquired			66,300
Liabilities assumed			(12,287)
Net Assets Acquired	[2]		$ 54,013
Weighted-average other intangible asset amortization life (in years)			10 years

[1] Figure includes cash acquired of $0.7 million.

[2] Figure includes cash acquired of $6.5 million.