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SPECIAL PURPOSE ENTITIES (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2018 USD ($) item | Jul. 31, 2018 USD ($) item project
GPS |  |
Variable Interest Entity |  |
Number of natural gas-fired power plants | project |  | 2
Number of joint ventures | item | 2 | 2
VIE |  |
Variable Interest Entity |  |
Development costs incurred | $ | $ 0.4 | $ 0.7

X
- Definition Represents the number of natural gas-fired power plants for which the entity has assigned its contracts for engineering, procurement and construction. + References No definition available. + Details
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- Definition Number of joint venture under contract with company. + References No definition available. + Details
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X
- Definition Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62014-109447 + Details
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- Details
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