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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016	Jan. 31, 2017
RELATED PARTY TRANSACTIONS (Details) [Line Items]
Accounts Payable, Related Parties, Current	$ 1.6		$ 1.6		$ 1.7
One Earth Energy And Nu Gen Energy [Member]
RELATED PARTY TRANSACTIONS (Details) [Line Items]
Costs and Expenses, Related Party	$ 36.5	$ 36.0	$ 78.7	$ 80.4

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Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
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Costs of sales and operating expenses for the period incurred from transactions with related parties.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
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