Property and Equipment, Net of Accumulated Depreciation (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2020 |
May 31, 2021 |
May 31, 2020 |
May 31, 2019 |
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| Property and Equipment, Net of Accumulated Depreciation [Abstract] | ||||
| Depreciation expense | $ 123.4 | $ 127.8 | $ 125.7 | |
| Loss on disposal | $ 5.1 | |||
| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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