Consolidated Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Net sales	$ 5,372.9	$ 4,947.9	$ 4,194.1
Cost of goods sold	3,484.8	3,476.3	3,042.6
Gross profit	1,888.1	1,471.6	1,151.5
Selling & administrative expenses	849.6	762.5	619.2
Operating income	1,038.5	709.1	532.3
Loss on disposition of business (Note 4)	0.0	0.0	(6.9)
Loss on extinguishment of debt (Note 13)	0.0	0.0	(16.8)
Pension charge (Note 12)	0.0	(7.0)	0.0
Interest expense, net	(36.7)	(49.6)	(54.7)
Other (expense) income, net	(18.5)	4.5	5.4
Total other expense	(55.2)	(52.1)	(73.0)
Income from continuing operations before income taxes	983.3	657.0	459.3
Provision for income taxes	217.3	140.2	88.2
Net income from continuing operations	766.0	516.8	371.1
Less: Net income from continuing operations attributable to noncontrolling interest	(6.2)	(5.5)	(6.1)
Net income from continuing operations attributable to Hubbell Incorporated	759.8	511.3	365.0
Income from discontinued operations, net of tax (Note 2)	0.0	34.6	34.5
Net income attributable to Hubbell Incorporated	$ 759.8	$ 545.9	$ 399.5
Earnings per share
Basic earnings per share from continuing operations (USD per share)	$ 14.14	$ 9.49	$ 6.70
Basic earnings per share from discontinued operations (USD per share)	0	0.64	0.63
Basic earnings per share (USD per share)	14.14	10.13	7.33
Diluted earnings per share from continuing operations (USD per share)	14.05	9.43	6.66
Diluted earnings per share from discontinued operations (USD per share)	0	0.64	0.62
Diluted earnings per share (USD per share)	$ 14.05	$ 10.07	$ 7.28