Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 123.5	$ 96.6	$ 305.0	$ 175.7
Other comprehensive (loss) income:
Foreign currency translation adjustments	(29.7)	9.3	(25.1)	2.7
Reclassification of currency translation losses included in net income	0.0	0.0	0.5	0.0
Defined benefit pension and post-retirement plans, net of taxes of $(1.3) and $(0.7)	3.4	2.1	5.5	4.1
Unrealized losses on investments, net of taxes of $0.0 and $0.0	0.0	0.0	(1.2)	(0.1)
Unrealized (losses) gains on cash flow hedges, net of taxes of $(0.2) and $(0.1)	0.5	0.2	(0.1)	0.3
Other comprehensive (loss) income	(25.8)	11.6	(20.4)	7.0
Comprehensive income	97.7	108.2	284.6	182.7
Less: Comprehensive income attributable to noncontrolling interest	1.5	0.8	2.8	2.2
Comprehensive income attributable to Hubbell Incorporated	$ 96.2	$ 107.4	$ 281.8	$ 180.5