Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 183.0	$ 164.5
Other comprehensive income (loss):
Foreign currency translation adjustments	(1.1)	17.3
Defined benefit pension and post-retirement plans, net of taxes of $(1.0) and $(0.7)	1.4	2.4
Unrealized (loss) gain on investments, net of taxes of $0.1 and $(0.1)	(0.3)	0.2
Unrealized gain (loss) on cash flow hedges, net of taxes of $(0.2) and $0.1	0.6	(0.4)
Other comprehensive income	0.6	19.5
Comprehensive income	183.6	184.0
Less: Comprehensive income attributable to noncontrolling interest	1.2	1.3
Comprehensive income attributable to Hubbell Incorporated	$ 182.4	$ 182.7