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Segment Information - Information Related to Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Feb. 29, 2020 | Feb. 28, 2019 | Feb. 29, 2020 | Feb. 28, 2019 | May 31, 2019
Segment Reporting Information |  |  |  |  |
Revenue | $ 1,810,648 | $ 1,682,330 | $ 5,465,536 | $ 5,098,573 |
Income (loss) before income taxes | 289,056 | 251,555 | 876,613 | 813,499 |
Total assets | 7,901,980 | 7,433,673 | 7,901,980 | 7,433,673 | $ 7,436,662
Operating Segments | Uniform Rental and Facility Services |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 1,448,021 | 1,358,322 | 4,372,524 | 4,124,038 |
Income (loss) before income taxes | 271,629 | 239,138 | 826,999 | 713,563 |
Total assets | 6,695,002 | 6,451,590 | 6,695,002 | 6,451,590 |
Operating Segments | First Aid and Safety Services |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 170,541 | 149,170 | 512,299 | 455,935 |
Income (loss) before income taxes | 24,692 | 21,622 | 74,102 | 64,933 |
Total assets | 552,455 | 508,865 | 552,455 | 508,865 |
Operating Segments | All Other |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 192,086 | 174,838 | 580,713 | 518,600 |
Income (loss) before income taxes | 18,331 | 17,495 | 54,161 | 40,627 |
Total assets | 420,082 | 392,359 | 420,082 | 392,359 |
Corporate |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 0 | 0 | 0 | 0 |
Income (loss) before income taxes | (25,596) | (26,700) | (78,649) | (5,624) |
Total assets | $ 234,441 | $ 80,859 | $ 234,441 | $ 80,859 |

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