Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 221.0	$ 202.0	$ 585.3	$ 593.6
Other comprehensive income (loss):
Foreign currency translation adjustments	17.7	(12.8)	(13.2)	0.5
Defined benefit pension and post-retirement plans, net of taxes of $(0.6) and $(0.7)	1.9	1.9	6.1	5.3
Unrealized gain (loss) on investments, net of taxes of $(0.2) and $0.1	0.8	(0.3)	0.4	(0.3)
Unrealized gain (loss) on cash flow hedges, net of taxes of $0.1 and $(0.1)	(0.4)	0.4	0.1	(0.5)
Other comprehensive income (loss)	20.0	(10.8)	(6.6)	5.0
Comprehensive income	241.0	191.2	578.7	598.6
Less: Comprehensive income attributable to noncontrolling interest	1.6	1.9	4.5	4.8
Comprehensive income attributable to Hubbell Incorporated	$ 239.4	$ 189.3	$ 574.2	$ 593.8