EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 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 Years Ended December 31,
	2018		2017		2016
Net Income Attributable to Common Shareholders	$	1,033.0	$	988.0	$	942.3
Weighted Average Common Shares Outstanding:
Basic	317,370,369		317,411,097		317,650,180
Dilutive Effect	623,565		620,483		804,059
Diluted	317,993,934		318,031,580		318,454,239
Basic EPS	$	3.25	$	3.11	$	2.97
Diluted EPS	$	3.25	$	3.11	$	2.96