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Basis of Presentation - Schedule of Impact of Adopting New Revenue Guidance Income Statement (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 28, 2019 | Nov. 30, 2018 | Aug. 31, 2018 | Feb. 28, 2018 | Nov. 30, 2017 | Aug. 31, 2017 | Feb. 28, 2019 | Feb. 28, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue | $ 1,682,330 |  |  | $ 1,589,138 |  |  | $ 5,098,573 | $ 4,807,082
Selling and administrative expenses | 476,099 |  |  | 490,618 |  |  | 1,472,404 | 1,444,985
Operating income | 278,255 |  |  | 200,024 |  |  | 819,123 | 684,334
Income (loss) before income taxes | 251,555 |  |  | 174,507 |  |  | 813,499 | 599,959
Income tax expense (benefit) | 50,632 |  |  | (121,282) |  |  | 157,035 | 5,325
Income from continuing operations | 200,923 |  |  | 295,789 |  |  | 656,464 | 594,634
Net income | $ 203,334 | $ 243,013 | $ 212,515 | $ 302,095 | $ 137,109 | $ 217,211 | $ 658,862 | $ 656,415
Diluted earnings per share (in dollars per share) | $ 1.85 |  |  | $ 2.71 |  |  | $ 5.93 | $ 5.90
Under Historical Guidance |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | $ 5,099,354 |
Selling and administrative expenses |  |  |  |  |  |  | 1,493,553 |
Operating income |  |  |  |  |  |  | 800,398 |
Income (loss) before income taxes |  |  |  |  |  |  | 794,774 |
Income tax expense (benefit) |  |  |  |  |  |  | 152,466 |
Income from continuing operations |  |  |  |  |  |  | 642,308 |
Net income |  |  |  |  |  |  | $ 644,706 |
Diluted earnings per share (in dollars per share) |  |  |  |  |  |  | $ 5.80 |
Impact of Adopting ASU 2014-09 | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | $ (781) |
Selling and administrative expenses |  |  |  |  |  |  | (21,149) |
Operating income |  |  |  |  |  |  | 18,725 |
Income (loss) before income taxes |  |  |  |  |  |  | 18,725 |
Income tax expense (benefit) |  |  |  |  |  |  | 4,569 |
Income from continuing operations |  |  |  |  |  |  | 14,156 |
Net income |  |  |  |  |  |  | $ 14,156 |
Diluted earnings per share (in dollars per share) |  |  |  |  |  |  | $ 0.13 |
Uniform Rental and Facility Services |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue | $ 1,358,322 |  |  | $ 1,284,516 |  |  | $ 4,124,038 | $ 3,904,338
Cost of revenue | 748,971 |  |  | 718,138 |  |  | 2,256,543 | 2,148,961
Uniform Rental and Facility Services | Under Historical Guidance |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | 4,127,359 |
Uniform Rental and Facility Services | Impact of Adopting ASU 2014-09 | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | (3,321) |
Other |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue | 324,008 |  |  | 304,622 |  |  | 974,535 | 902,744
Cost of revenue | $ 178,206 |  |  | $ 170,537 |  |  | 537,007 | $ 501,936
Other | Under Historical Guidance |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | 971,995 |
Cost of revenue |  |  |  |  |  |  | 535,364 |
Other | Impact of Adopting ASU 2014-09 | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  | 2,540 |
Cost of revenue |  |  |  |  |  |  | $ 1,643 |

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