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REVENUE RECOGNITION - Revenue Recognition Method (Details) - Americas Fabrication | 3 Months Ended | 6 Months Ended
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Feb. 28, 2019 | Feb. 28, 2019
Recognized as Amounts are Billed |  |
Disaggregation of Revenue [Line Items] |  |
Contract as percent of total segment revenue (percent) | 44.00% | 45.00%
Fabricated Product and Installation Services | Recognized over Time |  |
Disaggregation of Revenue [Line Items] |  |
Contract as percent of total segment revenue (percent) | 29.00% | 29.00%
Fabricated Product without Installation Services | Recognized over Time |  |
Disaggregation of Revenue [Line Items] |  |
Contract as percent of total segment revenue (percent) | 27.00% | 26.00%

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- Details
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