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Restructuring - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2018 | May 31, 2019 | May 31, 2018
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges | $ 36.5 | $ 10.5 |
Industrial Segment |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges | 1.2 | 10.0 |
Consumer Segment |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges | $ 36.5 | $ 10.5 |
2020 MAP to Growth |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Restructuring plan, expected to be formulated |  | During the second quarter ended November 30, 2018 |
Increase in current total expected costs |  | $ 13.1 |
Restructuring plan, anticipated to be completed |  | by the end of calendar year 2020 |
2020 MAP to Growth | Industrial Segment | Cost of Sales |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges |  | $ 10.0 | $ 1.2
2020 MAP to Growth | Consumer Segment | Cost of Sales |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges |  | 2.1 | $ 36.5
Inventory-related charges, favorable adjustment |  | $ 0.2 |

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