v3.25.1
Total Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period $ 3,282.7  
Net income 171.0 $ 149.1
Other comprehensive (loss) income 19.5 $ (9.3)
End of period $ 3,272.2  
Cash dividends declared (USD per share) $ 1.32 $ 1.22
Common Stock    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period $ 0.6 $ 0.6
End of period 0.6 0.6
Additional Paid-in Capital    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period 2.6 6.1
Stock-based compensation 14.4 12.8
Acquisition/surrender of common shares (15.5) (17.6)
Directors deferred compensation (1.5) 0.0
End of period 0.0 1.3
Retained Earnings    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period 3,651.6 3,182.7
Net income 169.7 147.8
Acquisition/surrender of common shares (122.7) (14.6)
Cash dividends declared (70.8) (65.7)
End of period 3,627.8 3,250.2
Accumulated Other Comprehensive Income (Loss)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period (386.5) (312.4)
Other comprehensive (loss) income 19.5 (9.3)
End of period (367.0) (321.7)
Total Hubbell Shareholders' Equity    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period 3,268.3 2,877.0
Net income 169.7 147.8
Other comprehensive (loss) income 19.5 (9.3)
Stock-based compensation 14.4 12.8
Acquisition/surrender of common shares (138.2) (32.2)
Cash dividends declared (70.8) (65.7)
Directors deferred compensation (1.5) 0.0
End of period 3,261.4 2,930.4
Non- controlling interest    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning of period 14.4 12.3
Net income 1.3 1.3
Dividends to noncontrolling interest (4.9) (0.9)
End of period $ 10.8 $ 12.7