Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	$ 3,129	$ 7,343	$ 12,280	$ 18,766
MAP to Growth
Restructuring Cost And Reserve [Line Items]
Beginning balance	10,551	9,646	13,237	12,694
Additions charged to expense	3,129	7,343	12,280	18,766
Cash payments charged against reserve	(4,667)	(5,760)	(16,110)	(18,896)
Non-cash charges and other adjustments	(4,161)		(4,555)
Non-cash charges included above		(523)		(1,858)
Ending balance	4,852	10,706	4,852	10,706
MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	4,655	3,566	7,357	4,837
Additions charged to expense	574	4,816	5,187	11,331
Cash payments charged against reserve	(1,699)	(3,182)	(9,014)	(10,968)
Non-cash charges and other adjustments	71		71
Non-cash charges included above		(161)		(161)
Ending balance	3,601	5,039	3,601	5,039
MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	5,896	6,080	5,880	7,857
Additions charged to expense	2,615	2,165	6,424	6,758
Cash payments charged against reserve	(2,968)	(2,578)	(6,761)	(7,928)
Non-cash charges and other adjustments	(4,292)		(4,292)
Non-cash charges included above				(1,020)
Ending balance	1,251	5,667	1,251	5,667
MAP to Growth | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	(60)	362	669	677
Cash payments charged against reserve			(335)
Non-cash charges and other adjustments	$ 60		$ (334)
Non-cash charges included above		$ (362)		$ (677)