Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 327.2us-gaap_ProfitLoss	$ 329.8us-gaap_ProfitLoss	$ 302.1us-gaap_ProfitLoss
Other comprehensive (loss) income:
Foreign currency translation adjustments	(35.7)	(15.0)	8.3
Pension and post retirement benefit plans’ service costs and net actuarial (losses) gains, net of taxes of $33.9, $(38.7) and $(14.2)	(57.7)	63.1	23.6
Unrealized loss on investments, net of taxes of $0.0, $0.2 and $0.1	(0.1)	(0.3)	(0.3)
Unrealized gains (losses) on cash flow hedges, net of taxes of $(0.1), $(0.1) and $0.2	0.2	0.3	(0.3)
Other comprehensive (loss) income	(93.3)	48.1	31.3
Comprehensive income	233.9	377.9	333.4
Less: Comprehensive income attributable to noncontrolling interest	1.9	3.3	2.4
COMPREHENSIVE INCOME ATTRIBUTABLE TO HUBBELL	$ 232.0us-gaap_ComprehensiveIncomeNetOfTax	$ 374.6us-gaap_ComprehensiveIncomeNetOfTax	$ 331.0us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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