Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 62.0	$ 63.4
Other comprehensive income (loss):
Foreign currency translation adjustments	0.7	(23.8)
Pension and post retirement benefit plans’ prior service costs and net actuarial gains, net of taxes of ($1.1) and ($1.0)	2.0	1.7
Unrealized gain (loss) on investments, net of taxes of ($0.2) and $0.0	0.3	0.0
Unrealized gain (loss) on cash flow hedges, net of taxes of $0.4 and ($0.2)	(2.3)	0.7
Other comprehensive income (loss)	0.7	(21.4)
Total comprehensive income	62.7	42.0
Less: Comprehensive income attributable to noncontrolling interest	1.1	1.0
Comprehensive income attributable to Hubbell	$ 61.6	$ 41.0