Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions |
May 31, 2020 |
May 31, 2019 |
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| Senior Notes, Series A [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of long-term borrowings | $ 441.9 | $ 416.6 |
| Senior Notes, Series B [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of long-term borrowings | $ 448.7 | $ 418.3 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Fair value portion of notes payable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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