QUARTERLY FINANCIAL DATA (Unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data [Abstract]

Quarterly Financial Information [Text Block]

QUARTERLY FINANCIAL DATA (UNAUDITED)

23.

Eversource	Quarter Ended
(Millions of Dollars, except per share information)	2015								2014
	March 31,		June 30,		September 30,		December 31,		March 31,		June 30,		September 30,		December 31,
Operating Revenues	$	2,513.4	$	1,817.1	$	1,933.1	$	1,691.2	$	2,290.6	$	1,677.6	$	1,892.5	$	1,881.2
Operating Income		497.5		412.0		469.2		385.5		467.7		294.0		440.9		430.2
Net Income		255.1		209.4		237.8		183.7		237.8		129.2		236.5		223.6
Net Income Attributable to Common Shareholders		253.3		207.5		235.9		181.8		236.0		127.4		234.6		221.5
Basic EPS (a)	$	0.80	$	0.65	$	0.74	$	0.57	$	0.75	$	0.40	$	0.74	$	0.69
Diluted EPS (a)	$	0.80	$	0.65	$	0.74	$	0.57	$	0.74	$	0.40	$	0.74	$	0.69
(a) The summation of quarterly EPS data may not equal annual data due to rounding.
	Quarter Ended
	2015								2014
(Millions of Dollars)	March 31,		June 30,		September 30,		December 31,		March 31,		June 30,		September 30,		December 31,
CL&P
Operating Revenues	$	804.9	$	666.6	$	704.3	$	626.9	$	734.6	$	587.3	$	695.6	$	675.1
Operating Income		141.8		154.0		161.1		154.2		158.0		92.1		146.2		159.0
Net Income		69.2		78.8		80.2		71.2		79.3		37.4		83.9		87.2
NSTAR Electric
Operating Revenues	$	766.8	$	617.2	$	750.7	$	546.6	$	666.2	$	561.5	$	727.9	$	581.1
Operating Income		159.5		151.4		214.2		117.7		118.4		121.5		206.6		132.0
Net Income		83.6		82.0		118.6		60.3		58.1		60.1		115.6		69.3
PSNH
Operating Revenues	$	284.8	$	241.9	$	234.4	$	211.1	$	299.8	$	211.6	$	223.7	$	224.4
Operating Income		63.2		54.1		63.6		49.3		64.0		49.0		56.4		60.0
Net Income		32.0		27.9		32.5		22.0		32.6		24.1		28.2		29.0
WMECO
Operating Revenues	$	152.9	$	125.2	$	125.1	$	114.9	$	137.4	$	108.3	$	118.1	$	129.6
Operating Income		28.6		28.9		30.0		28.0		34.7		17.7		31.2		34.0
Net Income		13.2		14.2		15.0		14.1		18.1		7.0		14.7		18.0