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Assets Acquired and Liabilities Assumed on Acquisition (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018
Acquisitions |  |  |  |
Goodwill |  | $ 1,250,066 | $ 1,245,762 | $ 1,192,174
Weighted-average other intangible asset amortization life (in years) |  | 16 years | 10 years |
2020 Acquisitions |  |  |  |
Acquisitions |  |  |  |
Current assets |  | $ 10,649 |  |
Property, plant and equipment |  | 1,694 |  |
Goodwill |  | 28,291 |  |
Trade names - indefinite lives |  | 1,555 |  |
Other intangible assets |  | 31,046 |  |
Other long-term assets |  | 56 |  |
Total Assets Acquired |  | 73,291 |  |
Liabilities assumed |  | (7,135) |  |
Net Assets Acquired | [1] | $ 66,156 |  |
2019 Acquisitions |  |  |  |
Acquisitions |  |  |  |
Current assets |  |  | $ 29,737 |
Property, plant and equipment |  |  | 22,607 |
Goodwill |  |  | 75,142 |
Trade names - indefinite lives |  |  | 14,033 |
Other intangible assets |  |  | 59,748 |
Other long-term assets |  |  | 3,095 |
Total Assets Acquired |  |  | 204,362 |
Liabilities assumed |  |  | (33,174) |
Net Assets Acquired | [2] |  | $ 171,188 |
[1] | Figure includes cash acquired of $1.6 million.
[2] | Figure includes cash acquired of $2.3 million.

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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