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Organization, Basis of Presentation and Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 01, 2018 | May 31, 2019 | Nov. 30, 2018 | May 31, 2018 | May 31, 2019 | May 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Overall decrease to revenues |  | $ (8,497,941) |  | $ (9,087,328) | $ (23,465,769) | $ (24,099,365)
Accounting Standards Update 2016-01 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Reclassification from AOCI | $ 4,700 |  | $ 0 |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Cumulative effect of adoption for all contracts and customers that had not been completed as of the adoption date | $ 1,000 |  |  |  |  |
Overall decrease to revenues |  | (3,783,752) |  |  | (9,415,783) |
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Overall decrease to revenues |  | $ 14,200 |  |  | $ 36,900 |

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