Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 1,196.4	$ 1,166.7	$ 2,283.7	$ 2,157.9
Cost of goods sold	839.0	818.8	1,619.0	1,527.1
Gross profit	357.4	347.9	664.7	630.8
Selling & administrative expenses	190.5	191.0	376.9	374.3
Operating income	166.9	156.9	287.8	256.5
Interest expense, net	(17.2)	(18.8)	(34.7)	(36.1)
Multi-employer pension charge (Note 15)	(22.9)	0.0	(22.9)	0.0
Other expense, net	(3.2)	(4.1)	(8.6)	(10.6)
Total other expense	(43.3)	(22.9)	(66.2)	(46.7)
Income before income taxes	123.6	134.0	221.6	209.8
Provision for income taxes	25.7	31.6	49.9	47.6
Net income	97.9	102.4	171.7	162.2
Less: Net income attributable to noncontrolling interest	1.9	2.1	3.4	3.6
Net income attributable to Hubbell	$ 96.0	$ 100.3	$ 168.3	$ 158.6
Earnings per share
Basic (USD per share)	$ 1.76	$ 1.83	$ 3.08	$ 2.89
Diluted (USD per share)	1.75	1.82	3.07	2.87
Cash dividends per common share (USD per share)	$ 0.84	$ 0.77	$ 1.68	$ 1.54