Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 242.2	$ 245.5	$ 425.2	$ 410.0
Other comprehensive income (loss):
Foreign currency translation adjustments	3.4	31.0	2.3	48.3
Defined benefit pension and post-retirement plans, net of taxes	1.9	2.1	3.3	4.5
Unrealized gain (loss) on investments, net of taxes	0.1	0.3	(0.2)	0.5
Unrealized gain (loss) on cash flow hedges, net of taxes	(0.4)	(1.1)	0.2	(1.5)
Other comprehensive income	5.0	32.3	5.6	51.8
Comprehensive income	247.2	277.8	430.8	461.8
Less: Comprehensive income attributable to noncontrolling interest	1.8	1.3	3.0	2.6
Comprehensive income attributable to Hubbell Incorporated	$ 245.4	$ 276.5	$ 427.8	$ 459.2