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Revenue Recognition - Total Revenue Disaggregated by Operating Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2020 | Nov. 30, 2019 | Nov. 30, 2020 | Nov. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 1,757,048 | $ 1,843,749 | $ 3,503,622 | $ 3,654,888
Uniform Rental and Facility Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 1,410,488 | 1,469,976 | 2,804,899 | 2,924,503
First Aid and Safety Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 194,419 | 169,668 | 398,899 | 341,758
Fire Protection Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 104,636 | 106,735 | 212,701 | 216,861
Uniform Direct Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 47,505 | $ 97,370 | $ 87,123 | $ 171,766
Revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 100.00% | 100.00% | 100.00% | 100.00%
Revenue | Uniform Rental and Facility Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 80.30% | 79.70% | 80.00% | 80.00%
Revenue | First Aid and Safety Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 11.00% | 9.20% | 11.40% | 9.40%
Revenue | Fire Protection Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 6.00% | 5.80% | 6.10% | 5.90%
Revenue | Uniform Direct Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 2.70% | 5.30% | 2.50% | 4.70%

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