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COMMITMENTS AND CONTINGENCIES (Detail)
$ in Millions
13 Months Ended
Apr. 30, 2018
USD ($)
Long-term Purchase Commitment [Line Items]  
Total purchase obligation $ 12.6
Purchase obligation, due in 2018 8.5
Purchase obligation, due in 2019 4.1
Texas  
Long-term Purchase Commitment [Line Items]  
Estimated cost of investment 225.0
Total purchase obligation 186.0
Construction and development costs $ 54.4