Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)

3 Months Ended

Mar. 31, 2015

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Net Benefit Costs [Table Text Block]

	Pension and SERP
	For the Three Months Ended
	March 31, 2015		March 31, 2014
(Millions of Dollars)	ES (1)		ES
Service Cost	$	23.2	$	22.3
Interest Cost		56.6		56.6
Expected Return on Plan Assets		(84.3)		(77.7)
Actuarial Loss		38.9		33.0
Prior Service Cost		0.9		1.1
Total Net Periodic Benefit Expense	$	35.3	$	35.3
Capitalized Pension Expense	$	9.6	$	9.7
	PBOP
	For the Three Months Ended
	March 31, 2015		March 31, 2014
(Millions of Dollars)	ES (1)		ES
Service Cost	$	4.2	$	3.0
Interest Cost		11.9		12.6
Expected Return on Plan Assets		(16.8)		(15.7)
Actuarial Loss		1.8		3.0
Prior Service Credit		(0.1)		(0.6)
Total Net Periodic Benefit Expense	$	1.0	$	2.3
Capitalized PBOP Expense	$	0.2	$	0.4

	Pension and SERP
	For the Three Months Ended March 31, 2015								For the Three Months Ended March 31, 2014
			NSTAR								NSTAR
(Millions of Dollars)	CL&P		Electric		PSNH (1)		WMECO		CL&P		Electric		PSNH		WMECO
Service Cost	$	6.0	$	3.8	$	2.9	$	1.1	$	5.2	$	4.6	$	2.8	$	1.0
Interest Cost		12.7		10.2		5.9		2.5		13.3		10.2		6.5		2.7
Expected Return on Plan Assets		(19.7)		(17.6)		(10.0)		(4.7)		(19.4)		(15.8)		(10.2)		(4.6)
Actuarial Loss		8.2		9.6		3.0		1.6		9.1		5.8		3.3		1.9
Prior Service Cost		0.4		-		0.1		0.1		0.5		-		0.2		0.1
Total Net Periodic Benefit Expense	$	7.6	$	6.0	$	1.9	$	0.6	$	8.7	$	4.8	$	2.6	$	1.1
Intercompany Allocations	$	6.4	$	3.6	$	1.7	$	1.2	$	6.8	$	2.4	$	1.9	$	1.3
Capitalized Pension Expense	$	4.3	$	2.8	$	0.8	$	0.5	$	4.9	$	1.9	$	0.9	$	0.8

	PBOP
	For the Three Months Ended March 31, 2015								For the Three Months Ended March 31, 2014
			NSTAR								NSTAR
(Millions of Dollars)	CL&P		Electric			PSNH (1)		WMECO	CL&P		Electric		PSNH		WMECO
Service Cost	$	0.6	$	1.3	$	0.4	$	0.1	$	0.6	$	0.7	$	0.4	$	0.1
Interest Cost		1.8		4.8		1.0		0.4		2.1		4.9		1.1		0.5
Expected Return on Plan Assets		(2.8)		(6.8)		(1.5)		(0.6)		(2.7)		(6.4)		(1.4)		(0.6)
Actuarial Loss/(Gain)		0.2		0.8		0.1		-		1.1		(0.1)		0.5		0.1
Prior Service Credit		-		(0.1)		-		-		-		(0.5)		-		-
Total Net Periodic Benefit Expense/(Income)	$	(0.2)	$	-	$	-	$	(0.1)	$	1.1	$	(1.4)	$	0.6	$	0.1
Intercompany Allocations	$	0.5	$	0.3	$	0.1	$	0.1	$	1.1	$	0.1	$	0.3	$	0.2
Capitalized PBOP Expense/(Income)	$	-	$	0.1	$	-	$	-	$	0.5	$	(0.5)	$	0.2	$	0.1
(1) Amounts exclude approximately $1 million that represented deferred regulatory assets.