Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Feb. 28, 2019	Feb. 28, 2019
Restructuring Cost And Reserve [Line Items]
Additions charged to expense	$ 8,679	$ 36,479
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Beginning balance	12,962	17,514
Additions charged to expense	8,679	36,479
Cash payments charged against reserve	(6,847)	(27,183)
Non-cash charges included above	(928)	(12,944)
Ending balance	13,866	13,866
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	10,427	9,957
Additions charged to expense	3,420	29,015
Cash payments charged against reserve	(4,975)	(23,563)
Non-cash charges included above		(6,537)
Ending balance	8,872	8,872
2020 MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance	2,535	6,184
Additions charged to expense	4,337	5,810
Cash payments charged against reserve	(1,872)	(3,620)
Non-cash charges included above	(6)	(3,380)
Ending balance	4,994	4,994
2020 MAP to Growth | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Beginning balance		1,373
Additions charged to expense	922	1,654
Non-cash charges included above	$ (922)	$ (3,027)