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Basis of Presentation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Aug. 31, 2021 | Aug. 31, 2020
Long Lived Assets Held-for-sale [Line Items] |  |
Gain (Loss) on Sale of Assets and Asset Impairment Charges | $ 0.0 | $ 6.6
Gain (Loss) on Sale of Assets and Asset Impairment Charges | 0.0 | 6.6
Lake Mary |  |
Long Lived Assets Held-for-sale [Line Items] |  |
Assets held-for-sale | 4.1 |
Witney Facilities |  |
Long Lived Assets Held-for-sale [Line Items] |  |
Assets held-for-sale | $ 2.2 |
Land, Buildings and Improvements |  |
Long Lived Assets Held-for-sale [Line Items] |  |
Long-lived assets |  | 5.7
Proceeds from sale |  | 12.3
Gain (Loss) on Sale of Assets and Asset Impairment Charges |  | 6.6
Gain (Loss) on Sale of Assets and Asset Impairment Charges |  | $ 6.6

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- Definition Amount of assets held-for-sale that are not part of a disposal group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 15 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121558832&loc=d3e400-110220 + Details
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- Definition Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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