Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Nov. 30, 2018 USD ($) Position	Nov. 30, 2018 USD ($) Position Executive
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 7,724	$ 27,800
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	7,724	27,800
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	6,533	25,595
Consumer Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 451	$ 2,002
Number of positions eliminated | Position	35	44
Consumer Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 279	$ 1,830
Industrial Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	4,423	$ 11,802
Number of corporate executives | Executive		3
Industrial Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	3,407	$ 9,772
Industrial Segment | 2020 MAP to Growth Related to Current Elimination | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 3,400	$ 9,600
Number of positions eliminated | Position	54	148
Industrial Segment | 2020 MAP to Growth Plan Related to Legal Function
Restructuring Cost And Reserve [Line Items]
Restructuring charges		$ 200
Number of positions eliminated | Position		1
Specialty Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 1,789	$ 3,936
Number of positions eliminated | Position	60	107
Number of corporate executives | Executive		4
Specialty Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 1,786	$ 3,933
Corporate/Other Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,061	10,060
Corporate/Other Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 1,061	$ 10,060
Number of corporate executives | Executive		2
Corporate/Other Segment | 2020 MAP to Growth | Vesting Equity Awards
Restructuring Cost And Reserve [Line Items]
Number of corporate executives | Executive		2