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Assets Acquired and Liabilities Assumed on Acquisition (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
May 31, 2019 | May 31, 2018 | May 31, 2017
Acquisitions |  |  |  |
Goodwill |  | $ 1,245,762 | $ 1,192,174 | $ 1,143,913
Weighted-average other intangible asset amortization life (in years) |  | 10 years | 12 years |
2019 Acquisitions |  |  |  |
Acquisitions |  |  |  |
Current assets |  | $ 29,734 |  |
Property, plant and equipment |  | 22,607 |  |
Goodwill |  | 77,459 |  |
Trade names - indefinite lives |  | 14,033 |  |
Other intangible assets |  | 59,748 |  |
Other long-term assets |  | 3,095 |  |
Total Assets Acquired |  | 206,676 |  |
Liabilities assumed |  | (36,083) |  |
Net Assets Acquired | [1] | $ 170,593 |  |
2018 Acquisitions |  |  |  |
Acquisitions |  |  |  |
Current assets |  |  | $ 28,939 |
Property, plant and equipment |  |  | 10,875 |
Goodwill |  |  | 43,656 |
Trade names - indefinite lives |  |  | 15,096 |
Other intangible assets |  |  | 36,450 |
Other long-term assets |  |  | 81 |
Total Assets Acquired |  |  | 135,097 |
Liabilities assumed |  |  | (19,369) |
Net Assets Acquired | [2] |  | $ 115,728 |
[1] | Figure includes cash acquired of $2.3 million.
[2] | Figure includes cash acquired of $3.3 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 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=84161108&loc=d3e4845-128472 + Details
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