Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 551.4	$ 405.6	$ 355.9
Currency translation adjustment:
Foreign currency translation adjustments	(27.9)	(11.5)	12.3
Reclassification of currency translation gains included in net income	0.5	0.0	0.0
Defined benefit pension and post-retirement plans, net of taxes of $(4.8), $(3.2) and $2.9	14.2	9.2	(8.8)
Unrealized gain (loss) on investments, net of taxes of $0.4, $0.1 and $(0.1)	(1.4)	(0.4)	0.4
Unrealized gains (losses) on cash flow hedges, net of taxes of $(0.1), $(0.4) and $0.5	0.2	1.1	(0.2)
Other comprehensive (loss) income	(14.4)	(1.6)	3.7
Comprehensive income	537.0	404.0	359.6
Less: Comprehensive income attributable to noncontrolling interest	5.5	6.1	4.7
COMPREHENSIVE INCOME ATTRIBUTABLE TO HUBBELL	$ 531.5	$ 397.9	$ 354.9