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Significant Accounting Policies - Narrative (Details) business in Millions | 12 Months Ended
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May 31, 2022 USD ($) reportingUnit business | May 31, 2021 USD ($) | May 31, 2020 USD ($)
Accounting Policies [Line Items] |  |  |
Number of businesses helped | business | 1 |  |
Restricted cash | $ 31,800,000 | $ 31,800,000 |
Inventory obsolescence reserve | 100,300,000 | 111,000,000 |
Inventory write-down | 28,500,000 | 43,600,000 |
Long-lived asset impairment | $ 0 | 5,114,000 | $ 9,220,000
Number of reporting units | reportingUnit | 4 |  |
Impairment of intangible assets | $ 0 | 0 | 0
2020 restructuring plan |  |  |
Accounting Policies [Line Items] |  |  |
Employee termination expense | $ 0 | 0 | 24,500,000
2020 restructuring plan | Employee termination benefits |  |  |
Accounting Policies [Line Items] |  |  |
Payments for restructuring |  | $ 10,200,000 | 14,300,000
Uniforms in service |  |  |
Accounting Policies [Line Items] |  |  |
Inventories useful life, maximum | 18 months |  |
Other rental items |  |  |
Accounting Policies [Line Items] |  |  |
Inventories useful life, maximum | 60 months |  |
Inventories useful life, minimum | 8 months |  |
Minimum | Service contracts and other assets |  |  |
Accounting Policies [Line Items] |  |  |
Service contracts and other assets useful lives | 5 years |  |
Maximum | Service contracts and other assets |  |  |
Accounting Policies [Line Items] |  |  |
Service contracts and other assets useful lives | 15 years |  |
Uniform rental and facility services | 2020 restructuring plan |  |  |
Accounting Policies [Line Items] |  |  |
Employee termination expense |  |  | $ 20,200,000
All Other |  |  |
Accounting Policies [Line Items] |  |  |
Number of reporting units | reportingUnit | 2 |  |

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