Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 183.4	$ 181.5
Currency translation adjustments:
Foreign currency translation adjustments	7.9	4.6
Reclassification of currency translation losses included in net income	0.0	0.5
Defined benefit pension and post-retirement plans, net of taxes of $(1.2) and $(0.5)	1.4	2.1
Unrealized gain (loss) on investments, net of taxes of $(0.1) and $0.4	0.3	(1.2)
Unrealized loss on cash flow hedges, net of taxes of $0.1 and $0.2	(0.3)	(0.6)
Other comprehensive income	9.3	5.4
Comprehensive income	192.7	186.9
Less: Comprehensive income attributable to noncontrolling interest	1.5	1.3
Comprehensive income attributable to Hubbell Incorporated	$ 191.2	$ 185.6