Consolidated Statement of Changes in Equity - USD ($) $ in Millions		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Hubbell Shareholders’ Equity	Non- controlling interest
Beginning of period at Dec. 31, 2022			$ 0.6	$ 0.0	$ 2,840.6	$ (345.2)	$ 2,496.0	$ 9.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 757.6			751.4		751.4	6.2
Other comprehensive (loss) income		32.8				32.8	32.8
Stock-based compensation				26.9			26.9
Acquisition and surrender of common shares	[1]			(21.4)	(36.6)		(58.0)
Cash dividends declared					(246.0)		(246.0)
Dividends to noncontrolling interest							0.0	(3.6)
Directors deferred compensation				0.6			0.6
End of period at Dec. 31, 2023			0.6	6.1	3,309.4	(312.4)	3,003.7	12.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		784.7			779.0		779.0	5.7
Other comprehensive (loss) income		(74.1)				(74.1)	(74.1)
Stock-based compensation				30.6			30.6
Acquisition and surrender of common shares	[1]			(34.8)	(41.1)		(75.9)
Cash dividends declared					(267.8)		(267.8)
Dividends to noncontrolling interest							0.0	(3.6)
Directors deferred compensation				0.7			0.7
End of period at Dec. 31, 2024		3,410.6	0.6	2.6	3,779.5	(386.5)	3,396.2	14.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		891.9			887.1		887.1	4.8
Other comprehensive (loss) income		71.7				71.7	71.7
Stock-based compensation				33.0			33.0
Acquisition and surrender of common shares	[1]			(28.4)	(223.9)		(252.3)
Cash dividends declared					(287.0)		(287.0)
Dividends to noncontrolling interest							0.0	(9.2)
Directors deferred compensation				(0.8)			(0.8)
End of period at Dec. 31, 2025		$ 3,857.9	$ 0.6	$ 6.4	$ 4,155.7	$ (314.8)	$ 3,847.9	$ 10.0

[1] For accounting purposes, the Company treats repurchased shares as constructively retired when acquired and accordingly charges the purchase price against Common Stock par value, Additional paid-in capital, to the extent available, and Retained earnings. The change in Retained earnings of $223.9 million, $41.1 million and $36.6 million in 2025, 2024 and 2023, respectively, reflects this accounting treatment.