REVENUES FROM CONTRACTS WITH CUSTOMERS - Accounting for the Loss Subcontract (Details) - TeesREPProject - USD ($) $ in Millions	3 Months Ended	9 Months Ended		12 Months Ended
	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Jan. 31, 2021	Mar. 24, 2020
REVENUES FROM CONTRACTS WITH CUSTOMERS
Percentage of completion of subcontracted work					90.00%
Reduction to the subcontract loss	$ 2.8		$ 4.1
Subcontract loss			$ 29.5
The total amounts of accounts receivable and contract assets with the customer		$ 0.1		$ 4.7