Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Summary of the computation of earnings per share

The following table sets forth the computation of earnings per share for the three and six months ended June 30, 2018 and 2017 (in millions, except per share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Numerator:
Net income attributable to Hubbell	$	100.3		$	79.1		$	158.6		$	141.9
Less: Earnings allocated to participating securities	(0.4		)	(0.3		)	(0.5		)	(0.5		)
Net income available to common shareholders	$	99.9		$	78.8		$	158.1		$	141.4
Denominator:
Average number of common shares outstanding	54.7			54.8			54.7			55.0
Potential dilutive common shares	0.2			0.3			0.3			0.3
Average number of diluted shares outstanding	54.9			55.1			55.0			55.3
Earnings per share:
Basic	$	1.83		$	1.44		$	2.89		$	2.57
Diluted	$	1.82		$	1.43		$	2.87		$	2.56