Restructuring - Additional Information (Detail) - 2020 MAP to Growth - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Nov. 30, 2018	Nov. 30, 2018
Restructuring Cost And Reserve [Line Items]
Restructuring plan, expected to be formulated		During the second quarter ended November 30, 2018
Decrease in current total expected costs		$ 5.7
Restructuring plan, anticipated to be completed		by the end of calendar year 2020
Industrial Segment \| Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 2.6	$ 7.1
Consumer Segment \| Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 1.0	1.3
Inventory-related charges, favorable adjustment		$ 0.2

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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