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v3.20.2

Revenue - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2020 USD ($) | Feb. 29, 2020 USD ($) | Nov. 30, 2019 USD ($) | Aug. 31, 2019 USD ($) | May 31, 2019 USD ($) | Feb. 28, 2019 USD ($) | Nov. 30, 2018 USD ($) | Aug. 31, 2018 USD ($) | May 31, 2020 USD ($) Segment | May 31, 2019 USD ($) Segment | May 31, 2018 USD ($) | [1]
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | Segment |  |  |  |  |  |  |  |  | 4 |  | 3 |  |
Revenue performance obligation description of payment terms |  |  |  |  |  |  |  |  | Payment terms and conditions vary by contract type, although our customers’ payment terms generally include a requirement to pay within 30 to 60 days of fulfilling our performance obligations. |  |  |  |
Revenue, Practical Expedient, Financing Component [true false] |  |  |  |  |  |  |  |  | false |  |  |  |
Net contract assets (liabilities) |  |  |  |  |  |  |  |  | $ 4,229 |  |  |  |
Net Sales | $ 1,458,962 | $ 1,173,976 | $ 1,401,292 | $ 1,472,764 | $ 1,601,401 | $ 1,140,630 | $ 1,362,531 | $ 1,459,989 | 5,506,994 | [1] | $ 5,564,551 | [1] | $ 5,321,643
Long-term deferred revenue | 66,000 |  |  |  | $ 66,500 |  |  |  | $ 66,000 |  | $ 66,500 |  |
General Contracting And Roofing Services |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales | $ 22,100 |  |  |  |  |  |  |  |  |  |  |  |
[1] | It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.

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