Comprehensive Income (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net income	$ 83.3	$ 71.7	$ 199.7	$ 168.6
Foreign currency translation adjustments	(22.5)	14.2	(7.0)	7.8
Amortization of net prior service costs and net acturial losses, net of tax	1.2	0.8	3.9	2.5
Change in unrealized gains on investments, net of tax	0.2	0.2	0.4	0.3
Change in unrealized (losses) gains on cash flow hedges, net of tax	1.0	(0.2)	1.0	0.6
Total comprehensive income	63.2	86.7	198.0	179.8
Less: Comprehensive income attributable to noncontrolling interest	0.9	0.4	1.8	1.1
Comprehensive income attributable to Hubbell	$ 62.3	$ 86.3	$ 196.2	$ 178.7