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DISCONTINUED OPERATIONS (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
May 04, 2014
Feb. 02, 2014
Jan. 31, 2015
Feb. 01, 2015
Discontinued operations disclosures        
Gain (loss) on disposal of discontinued operations $ (14.0)us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax      
Litemor        
Discontinued operations disclosures        
Gain (loss) on disposal of discontinued operations   15.0us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= hds_LitemorMember
   
Hardware Solutions        
Discontinued operations disclosures        
Proceeds from Divestiture of Businesses     198.0us-gaap_ProceedsFromDivestitureOfBusinesses
/ us-gaap_StatementBusinessSegmentsAxis
= hds_CrownBoltMember
 
Sale of issued and outstanding equity interests, transaction cost     2.0hds_DisposalGroupIncludingDiscontinuedOperationRelatedTransactionCosts
/ us-gaap_StatementBusinessSegmentsAxis
= hds_CrownBoltMember
 
Gain (loss) on disposal of discontinued operations       $ 8.0us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
/ us-gaap_StatementBusinessSegmentsAxis
= hds_CrownBoltMember