Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 74.7	$ 90.5	$ 219.4	$ 246.6
Other comprehensive income (loss):
Foreign currency translation adjustments	(29.9)	(24.2)	(40.1)	(11.5)
Pension and post retirement benefit plans’ prior service costs and net actuarial gains, net of taxes	1.8	0.7	5.3	1.6
Unrealized loss on investments, net of taxes	0.0	0.0	(0.1)	0.0
Unrealized gain (loss) on cash flow hedges, net of taxes	0.6	0.5	0.6	0.1
Other comprehensive income (loss)	(27.5)	(23.0)	(34.3)	(9.8)
Total comprehensive income	47.2	67.5	185.1	236.8
Less: Comprehensive income attributable to noncontrolling interest	1.4	0.9	3.6	2.6
Comprehensive income attributable to Hubbell	$ 45.8	$ 66.6	$ 181.5	$ 234.2