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Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
May 31, 2022 | May 31, 2021 | May 31, 2020 | May 31, 2019
Loss Contingencies [Line Items] |  |  |  |
Deferred Tax Liabilities, Net | $ 89.6 | $ 96.8 |  |
Deferred Tax Assets, Net | 17.9 | 25.4 |  |
Operating Loss Carryforwards, Valuation Allowance |  | 1.3 |  |
Unrecognized tax benefits | 3.1 | 12.3 | $ 10.2 | $ 9.0
Income tax penalties and interest accrued | 0.3 | 2.6 | 2.2 |
Unrecognized tax benefits that would impact effective tax rate | 3.1 | 12.3 | 10.2 |
Tax (expense) benefit from income tax penalties and interest expense | 2.3 | 0.5 | $ 0.8 |
Period increase (decrease) in unrecognized tax benefits | 9.2 | (2.1) |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 0.0 | 8.2 |  |
Tax Adjustments, Settlements, and Unusual Provisions | 0.0 |  |  |
State and Local Jurisdiction |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Operating Loss Carryforwards, Valuation Allowance | 8.6 |  |  |
Non-United States |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Operating Loss Carryforwards, Valuation Allowance | 25.3 |  |  |
Other Noncurrent Liabilities |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Deferred Tax Liabilities, Net | 3.6 | $ 0.0 |  |
Deferred Tax Assets, Net | $ 21.5 |  |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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