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Restructuring - Additional Information (Detail) - MAP to Growth - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2019 | Nov. 30, 2020 | Nov. 30, 2019
Restructuring Cost And Reserve [Line Items] |  |  |
Decrease in current total expected costs |  | $ 3.4 |
Consumer Segment | Cost of Sales |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges | $ 6.3 |  | $ 7.2
PCG Segment | Cost of Sales |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges | $ 1.0 |  | 3.1
CPG Segment | Cost of Sales |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Inventory-related charges |  |  | $ 0.3
Severance and Benefit Charges |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Decrease in current total expected costs |  | 4.5 |
Facility Closure and Other Related Costs |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Increase in current total expected costs |  | 0.6 |
Other Restructuring Costs |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Increase in current total expected costs |  | $ 0.5 |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
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