GUARANTOR SUBSIDIARIES - General Information (Details)	12 Months Ended
Jan. 31, 2016
HDS (Debt Issuer)
Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)
Period of notice to the applicable trustee to cause subsidiary guarantor to be released from subsidiary guarantee	30 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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