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v3.19.1

Summary of Accounts Receivable Net of Allowances and Net Contract Assets (Liabilities) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 28, 2019 | Feb. 28, 2019 | Nov. 30, 2018 | May 31, 2018
Disaggregation Of Revenue [Line Items] |  |  |  |
Accounts receivable, less allowance | $ 961,628 | $ 961,628 | $ 1,013,030 | $ 1,113,818
Contract assets | 11,204 | 11,204 | 15,955 | 18,212
Contract liabilities - short-term | (24,697) | (24,697) | (23,454) | (23,335)
Net Contract Liabilities | (13,493) | (13,493) | $ (7,499) | $ (5,123)
Change in Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Change in accounts receivable, less allowance | (51,402) | (152,190) |  |
Change in contract assets | (4,751) | (7,008) |  |
Change in Net Contract Liabilities | $ (5,994) | $ (8,370) |  |
Percentage of change in accounts receivable, less allowance | (5.10%) | (13.70%) |  |
Percentage of change in contract assets | (29.80%) | (38.50%) |  |
Percentage of change in Net Contract Liabilities | 79.90% | 163.40% |  |
Short-term |  |  |  |
Change in Contract with Customer, Asset and Liability [Abstract] |  |  |  |
Change in contract liabilities | $ (1,243) | $ (1,362) |  |
Percentage of change in contract liabilities | 5.30% | 5.80% |  |

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