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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018 | May 31, 2017 | May 31, 2009
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Accumulated goodwill impairment losses | $ 156,300,000 |  |  |  |
Impairment losses | 0 | $ 0 | $ 0 |  |
Intangible asset amortization expense | 45,600,000 | 45,100,000 | 43,200,000 |  |
Future amortization expense of intangible asset in 2021 | 42,100,000 |  |  |  |
Future amortization expense of intangible asset in 2022 | 40,800,000 |  |  |  |
Future amortization expense of intangible asset in 2023 | 37,100,000 |  |  |  |
Future amortization expense of intangible asset in 2024 | 33,900,000 |  |  |  |
Future amortization expense of intangible asset in 2025 | 29,100,000 |  |  |  |
Accumulated intangible asset impairment losses, gross | 61,800,000 |  |  |  |
Other intangible asset impairment losses |  | 4,200,000 | $ 0 |  |
SPG Segments |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  | $ 141,400,000 |
SPG Segments | Customer-related Intangibles |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Other intangible asset impairment losses |  | 2,200,000 |  |  |
CPG Segment |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Accumulated goodwill impairment losses |  |  |  |  | $ 14,900,000
CPG Segment | Trade names |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Other intangible asset impairment losses |  | $ 2,000,000.0 |  |  |
Industrial Segment |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Accumulated intangible asset impairment losses, gross |  |  |  |  | $ 600,000
Consumer Segment |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Accumulated intangible asset impairment losses, gross |  |  |  | $ 53,000,000.0 |
Consumer Segment | Trade names | Restructuring Expense |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |
Other intangible asset impairment losses | $ 4,000,000.0 |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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