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Discontinued Operations - Schedule of Discontinued Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May 31, 2018 | May 31, 2017 | May 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income tax benefit (expense) | $ (35,313) | $ (15,057) | $ (138,184)
Gain on sale of business | 96,400 | 0 | 0
Gain on Shred-it |  | 25,457 | 354,071
Net income from discontinued operations | 58,654 | 23,422 | 244,915
Shred-it Partnership |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain on sale of business |  | 25,500 |
Discontinued Operations |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Revenue | 10,773 | 105,559 | 109,686
(Loss) income before income taxes, excluding gains from sale transactions and investments | (2,433) | 10,622 | 13,242
Income tax benefit (expense) | 706 | (3,930) | (4,900)
Gain on sale of business | 96,400 | 0 | 0
Income tax expense on net gain | (36,019) | (11,127) | (133,284)
Net income from discontinued operations | 58,654 | 23,422 | 244,915
Discontinued Operations | Shred-it Partnership |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain on Shred-it | 0 | 25,457 | 354,071
Discontinued Operations | Storage |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain on sale of business | $ 0 | $ 2,400 | $ 15,786

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