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REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2024 | Jan. 31, 2024 | Jan. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Contract Liabilities |  | $ 95.5 | $ 131.0
Retained amounts by project owners | $ 21.2 | $ 21.2 | $ 49.1
Amounts of unpriced change orders included in transaction prices | 8.4 | 8.4 | 11.6
Kilroot Project | APC |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Estimated loss | $ 10.0 |  |
Estimated loss, including reversal of net gross profit |  | $ 13.6 |

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