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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2022 | May 31, 2021 | May 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Deferred commissions current | $ 83.7 | $ 79.4 |
Deferred commissions noncurrent | 232.2 | 227.1 |
Amortization of deferred commissions | $ 87.4 | $ 83.1 | $ 77.8
Revenue from Contract with Customer Benchmark | Product concentration risk |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percentage of revenue | 100.00% | 100.00% | 100.00%
Uniform Rental and Facility Services, First Aid and Safety Services and Fire Protection Services | Revenue from Contract with Customer Benchmark | Product concentration risk | Route servicing fees |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percentage of revenue | 95.00% | 95.00% |
Uniform Direct Sales | Revenue from Contract with Customer Benchmark | Product concentration risk |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percentage of revenue | 3.40% | 2.70% | 4.40%
Uniform Direct Sales | Revenue from Contract with Customer Benchmark | Product concentration risk | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Percentage of revenue | 5.00% |  |

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