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Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Percentage of LIFO inventory 74.00%us-gaap_PercentageOfLIFOInventory    
Capitalized Computer Software, Net [Abstract]      
Capitalized computer software costs, net of amortization $ 12.7us-gaap_CapitalizedComputerSoftwareNet $ 10.9us-gaap_CapitalizedComputerSoftwareNet  
Amortization expense $ 4.3us-gaap_CapitalizedComputerSoftwareAmortization $ 4.3us-gaap_CapitalizedComputerSoftwareAmortization $ 3.5us-gaap_CapitalizedComputerSoftwareAmortization
Goodwill Annual Impairment Test [Abstract]      
Excess of goodwill implied fair value, over carrying value, beginning range 100.00%hubb_ExcessOfGoodwillImpliedFairValueOverCarryingValueBeginningRange    
Excess of goodwill implied fair value, over carrying value, end of range 400.00%hubb_ExcessOfGoodwillImpliedFairValueOverCarryingValueEndOfRange    
Research and development expense as a percentage of cost of goods sold 2.00%hubb_ResearchAndDevelopmentExpenseAsPercentageOfCostOfGoodsSold 2.00%hubb_ResearchAndDevelopmentExpenseAsPercentageOfCostOfGoodsSold 2.00%hubb_ResearchAndDevelopmentExpenseAsPercentageOfCostOfGoodsSold
Minimum      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Customer returns as a percentage of gross sales 1.00%hubb_SalesReturnsAsPercentageOfGrossSalesPercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Useful life, intangible assets 5 years    
Maximum      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Customer returns as a percentage of gross sales 3.00%hubb_SalesReturnsAsPercentageOfGrossSalesPercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Useful life, intangible assets 30 years