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Fair Value Measurement Narrative (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended
Mar. 31, 2015
forward_exchange_contrtact
Mar. 31, 2014
Dec. 31, 2014
Nov. 30, 2010
May 31, 2008
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Available for sale investments $ 45.4us-gaap_AvailableForSaleSecurities   $ 43.0us-gaap_AvailableForSaleSecurities    
Trading securities 9.7us-gaap_TradingSecurities   8.9us-gaap_TradingSecurities    
Purchase of trading securities related to deferred compensation plans 0.8us-gaap_PaymentsToAcquireTradingSecuritiesHeldforinvestment 1.1us-gaap_PaymentsToAcquireTradingSecuritiesHeldforinvestment      
Proceeds from securities sold 0.2us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment 0.2us-gaap_ProceedsFromSaleOfTradingSecuritiesHeldforinvestment      
Number of foreign exchange contracts held 18us-gaap_NumberOfForeignCurrencyDerivativesHeld        
Derivative, notional amount 1.0invest_DerivativeNotionalAmount        
Unrealized gain (loss) on interest rate lock, recorded in accumulated other comprehensive loss (0.4)us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss   (0.4)us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss    
Long-Term Debt 597.7us-gaap_LongTermDebtNoncurrent   597.6us-gaap_LongTermDebtNoncurrent    
Long-term debt, fair value 649.3us-gaap_LongTermDebtFairValue   645.1us-gaap_LongTermDebtFairValue    
Interest Rate Lock 2010          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized gain (loss) on interest rate lock, recorded in accumulated other comprehensive loss       (1.6)us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss
/ us-gaap_DerivativeByNatureAxis
= hubb_InterestRateLock2010Member
 
Interest Rate Lock 2008          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized gain (loss) on interest rate lock, recorded in accumulated other comprehensive loss         $ 1.2us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss
/ us-gaap_DerivativeByNatureAxis
= hubb_InterestRateLock2008Member