Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 149.1	$ 183.4
Other comprehensive income (loss):
Foreign currency translation adjustments	(11.9)	7.9
Defined benefit pension and post-retirement plans, net of taxes of $(0.6) and $(1.2)	2.5	1.4
Unrealized gain (loss) on investments, net of taxes of $0.1 and $(0.1)	(0.3)	0.3
Unrealized gain (loss) on cash flow hedges, net of taxes of $(0.1) and $0.1	0.4	(0.3)
Other comprehensive income (loss)	(9.3)	9.3
Comprehensive income	139.8	192.7
Less: Comprehensive income attributable to noncontrolling interest	1.3	1.5
Comprehensive income attributable to Hubbell Incorporated	$ 138.5	$ 191.2