Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 264.6	$ 256.7	$ 689.8	$ 666.7
Other comprehensive (loss) income:
Foreign currency translation adjustments	(1.9)	1.0	0.4	49.3
Defined benefit pension and post-retirement plans, net of taxes	1.9	2.2	5.2	6.7
Unrealized (loss) gain on investments, net of taxes	(1.3)	0.3	(1.5)	0.8
Unrealized gain (loss) on cash flow hedges, net of taxes	0.1	0.5	0.3	(1.0)
Other comprehensive (loss) income	(1.2)	4.0	4.4	55.8
Comprehensive income	263.4	260.7	694.2	722.5
Less: Comprehensive income attributable to noncontrolling interest	2.1	1.2	5.1	3.8
Comprehensive income attributable to Hubbell Incorporated	$ 261.3	$ 259.5	$ 689.1	$ 718.7