Consolidated Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net sales	$ 5,628.5	$ 5,372.9	$ 4,947.9
Cost of goods sold	3,724.4	3,484.8	3,476.3
Gross profit	1,904.1	1,888.1	1,471.6
Selling & administrative expenses	812.5	849.6	762.5
Operating income	1,091.6	1,038.5	709.1
Loss on disposition of business (Note 4)	(5.3)	0.0	0.0
Pension charge (Note 12)	0.0	0.0	(7.0)
Interest expense, net	(73.8)	(36.7)	(49.6)
Other (expense) income, net	(7.2)	(18.5)	4.5
Total other expense	(86.3)	(55.2)	(52.1)
Income from continuing operations before income taxes	1,005.3	983.3	657.0
Provision for income taxes	221.8	217.3	140.2
Net income from continuing operations	783.5	766.0	516.8
Less: Net income from continuing operations attributable to noncontrolling interest	(5.7)	(6.2)	(5.5)
Net income from continuing operations attributable to Hubbell Incorporated	777.8	759.8	511.3
Income from discontinued operations, net of tax (Note 2)	0.0	0.0	34.6
Net income attributable to Hubbell Incorporated	$ 777.8	$ 759.8	$ 545.9
Earnings per share
Basic earnings per share from continuing operations (USD per share)	$ 14.46	$ 14.14	$ 9.49
Basic earnings per share from discontinued operations (USD per share)	0	0	0.64
Basic earnings per share (USD per share)	14.46	14.14	10.13
Diluted earnings per share from continuing operations (USD per share)	14.37	14.05	9.43
Diluted earnings per share from discontinued operations (USD per share)	0	0	0.64
Diluted earnings per share (USD per share)	$ 14.37	$ 14.05	$ 10.07