Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	$ 2,977	$ 4,918	$ 3,988	$ 9,151
MAP to Growth
Restructuring Cost And Reserve [Line Items]
Beginning balance	3,337	11,031	5,720	13,237
Additions charged to expense	2,977	4,918	3,988	9,151
Cash payments charged against reserve	(3,083)	(5,238)	(6,095)	(11,442)
Non-cash charges and other adjustments	(764)	(160)	(1,146)	(395)
Ending balance	2,467	10,551	2,467	10,551
MAP to Growth | Severance and Benefit Costs (Credits)
Restructuring Cost And Reserve [Line Items]
Beginning balance	2,386	4,893	4,430	7,357
Additions charged to expense	1,805	2,135	1,528	4,612
Cash payments charged against reserve	(2,044)	(2,373)	(3,808)	(7,314)
Non-cash charges and other adjustments	(576)	0	(579)	0
Ending balance	1,571	4,655	1,571	4,655
MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	951	6,138	1,290	5,880
Additions charged to expense	1,171	2,288	2,457	3,809
Cash payments charged against reserve	(1,039)	(2,530)	(2,287)	(3,793)
Non-cash charges and other adjustments	(187)	0	(564)	0
Ending balance	896	5,896	896	5,896
MAP to Growth | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	0	0	0	0
Additions charged to expense	1	495	3	730
Cash payments charged against reserve	0	(335)		(335)
Non-cash charges and other adjustments	(1)	(160)	(3)	(395)
Ending balance	$ 0	$ 0	$ 0	$ 0