EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 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 Nine Months Ended
	September 30, 2018		September 30, 2017		September 30, 2018		September 30, 2017
Net Income Attributable to Common Shareholders	$	289.4	$	260.4	$	801.7	$	750.6
Weighted Average Common Shares Outstanding:
Basic	317,360,110		317,393,029		317,367,252		317,415,848
Dilutive Effect	607,201		556,367		581,246		591,194
Diluted	317,967,311		317,949,396		317,948,498		318,007,042
Basic EPS	$	0.91	$	0.82	$	2.53	$	2.36
Diluted EPS	$	0.91	$	0.82	$	2.52	$	2.36