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Segment Information - Information Related to Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Feb. 28, 2017 | Feb. 29, 2016 | Feb. 28, 2017 | Feb. 29, 2016 | May 31, 2016
Segment Reporting Information |  |  |  |  |
Revenue | $ 1,281,135 | $ 1,216,083 | $ 3,872,188 | $ 3,634,053 |
Income (loss) before income taxes | 181,010 | 177,124 | 563,486 | 530,627 |
Total assets | 4,271,164 | 4,231,210 | 4,271,164 | 4,231,210 | $ 4,098,815
Operating Segments | Uniform Rental and Facility Services |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 993,398 | 936,565 | 2,998,559 | 2,812,677 |
Income (loss) before income taxes | 172,543 | 167,502 | 535,149 | 502,178 |
Total assets | 3,285,791 | 3,050,138 | 3,285,791 | 3,050,138 |
Operating Segments | First Aid and Safety Services |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 124,239 | 119,064 | 373,875 | 338,990 |
Income (loss) before income taxes | 12,235 | 12,634 | 38,525 | 36,073 |
Total assets | 452,397 | 436,390 | 452,397 | 436,390 |
Operating Segments | All Other |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 163,498 | 160,454 | 499,754 | 482,386 |
Income (loss) before income taxes | 9,917 | 12,816 | 30,840 | 40,557 |
Total assets | 385,732 | 357,863 | 385,732 | 357,863 |
Corporate |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Revenue | 0 | 0 | 0 | 0 |
Income (loss) before income taxes | (13,685) | (15,828) | (41,028) | (48,181) |
Total assets | $ 147,244 | $ 386,819 | $ 147,244 | $ 386,819 |

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