EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the components of basic and diluted EPS:

Eversource (Millions of Dollars, except share information)	For the Three Months Ended				For the Six Months Ended
	June 30, 2018		June 30, 2017		June 30, 2018		June 30, 2017
Net Income Attributable to Common Shareholders	$	242.8	$	230.7	$	512.3	$	490.2
Weighted Average Common Shares Outstanding:
Basic	317,344,596		317,391,365		317,370,825		317,427,258
Dilutive Effect	540,591		555,829		568,269		608,606
Diluted	317,885,187		317,947,194		317,939,094		318,035,864
Basic and Diluted EPS	$	0.76	$	0.72	$	1.61	$	1.54