Consolidated Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 4,947.9	$ 4,194.1	$ 3,682.5
Cost of goods sold	3,476.3	3,042.6	2,596.7
Gross profit	1,471.6	1,151.5	1,085.8
Selling & administrative expenses	762.5	619.2	591.3
Operating income	709.1	532.3	494.5
Loss on disposition of business (Note 4)	0.0	(6.9)	0.0
Loss on extinguishment of debt (Note 13)	0.0	(16.8)	0.0
Pension charge (Note 12)	(7.0)	0.0	(7.6)
Interest expense, net	(49.6)	(54.7)	(60.1)
Other income (expense), net	4.5	5.4	(2.3)
Total other expense	(52.1)	(73.0)	(70.0)
Income from continuing operations before income taxes	657.0	459.3	424.5
Provision for income taxes	140.2	88.2	89.8
Net income from continuing operations	516.8	371.1	334.7
Less: Net income from continuing operations attributable to noncontrolling interest	(5.5)	(6.1)	(4.7)
Net income from continuing operations attributable to Hubbell Incorporated	511.3	365.0	330.0
Income from discontinued operations, net of tax (Note 2)	34.6	34.5	21.2
Net income attributable to Hubbell Incorporated	$ 545.9	$ 399.5	$ 351.2
Earnings per share
Basic earnings per share from continuing operations (USD per share)	$ 9.49	$ 6.70	$ 6.07
Basic earnings per share from discontinued operations (USD per share)	0.64	0.63	0.39
Basic earnings per share (USD per share)	10.13	7.33	6.46
Diluted earnings per share from continuing operations (USD per share)	9.43	6.66	6.04
Diluted earnings per share from discontinued operations (USD per share)	0.64	0.62	0.39
Diluted earnings per share (USD per share)	$ 10.07	$ 7.28	$ 6.43