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Revenue Recognition - Total Revenue Disaggregated by Operating Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 29, 2020 | Feb. 28, 2019 | Feb. 29, 2020 | Feb. 28, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 1,810,648 | $ 1,682,330 | $ 5,465,536 | $ 5,098,573
Uniform Rental and Facility Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 1,448,021 | 1,358,322 | 4,372,524 | 4,124,038
First Aid and Safety Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 170,541 | 149,170 | 512,299 | 455,935
Fire Protection Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 107,127 | 99,688 | 323,988 | 293,980
Uniform Direct Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 84,959 | $ 75,150 | $ 256,725 | $ 224,620
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 | 80.00% | 80.70% | 80.00% | 80.90%
Revenue | First Aid and Safety Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 9.40% | 8.90% | 9.40% | 8.90%
Revenue | Fire Protection Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 5.90% | 5.90% | 5.90% | 5.80%
Revenue | Uniform Direct Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of revenue | 4.70% | 4.50% | 4.70% | 4.40%

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