Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)

9 Months Ended

Sep. 30, 2014

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Net Benefit Costs [Table Text Block]

	Pension and SERP				Pension and SERP
	For the Three Months Ended				For the Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
(Millions of Dollars)	NU		NU		NU		NU
Service Cost	$	19.1	$	25.6	$	60.7	$	76.7
Interest Cost		56.4		51.7		169.5		155.0
Expected Return on Plan Assets		(77.7)		(69.5)		(233.1)		(208.5)
Actuarial Loss		31.7		52.4		96.5		158.1
Prior Service Cost		1.1		1.1		3.3		3.0
Total Net Periodic Benefit Expense	$	30.6	$	61.3	$	96.9	$	184.3
Capitalized Pension Expense	$	8.3	$	18.3	$	26.7	$	54.9
	PBOP				PBOP
	For the Three Months Ended				For the Nine Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
(Millions of Dollars)	NU		NU		NU		NU
Service Cost	$	3.1	$	4.2	$	9.3	$	12.6
Interest Cost		12.4		11.8		37.1		35.4
Expected Return on Plan Assets		(15.8)		(13.9)		(47.4)		(41.6)
Actuarial Loss		3.0		6.5		9.1		19.5
Prior Service Credit		(0.7)		(0.5)		(2.1)		(1.5)
Total Net Periodic Benefit Expense	$	2.0	$	8.1	$	6.0	$	24.4
Capitalized PBOP Expense	$	1.1	$	2.6	$	1.9	$	7.6

	Pension and SERP
	For the Three Months Ended September 30, 2014								For the Three Months Ended September 30, 2013
			NSTAR								NSTAR
(Millions of Dollars)	CL&P		Electric		PSNH		WMECO		CL&P		Electric(1)		PSNH		WMECO
Service Cost	$	5.0	$	3.0	$	2.3	$	0.8	$	6.3	$	8.3		3.3	$	1.2
Interest Cost		12.5		10.3		5.7		2.5		12.1		14.5		5.8		2.5
Expected Return on Plan Assets		(18.7)		(15.7)		(9.3)		(4.4)		(18.4)		(21.1)		(9.2)		(4.3)
Actuarial Loss		8.2		5.9		2.8		1.7		13.9		14.4		5.4		2.9
Prior Service Cost		0.4		-		0.1		0.1		0.4		-		0.1		0.1
Total Net Periodic Benefit Expense	$	7.4	$	3.5	$	1.6	$	0.7	$	14.3	$	16.1	$	5.4	$	2.4
Intercompany Allocations	$	6.5	$	2.9	$	1.8	$	1.2	$	11.4	$	(2.1)	$	2.6	$	2.0
Capitalized Pension Expense	$	4.3	$	2.6	$	0.7	$	0.6	$	7.0	$	9.8	$	1.7	$	1.3
	Pension and SERP
	For the Nine Months Ended September 30, 2014								For the Nine Months Ended September 30, 2013
			NSTAR								NSTAR
(Millions of Dollars)	CL&P		Electric		PSNH		WMECO		CL&P		Electric(1)		PSNH		WMECO
Service Cost	$	15.2	$	10.6	$	7.4	$	2.7	$	18.7	$	24.8	$	9.8	$	3.5
Interest Cost		38.1		31.0		18.0		7.8		36.3		43.5		17.8		7.5
Expected Return on Plan Assets		(56.7)		(47.3)		(28.8)		(13.5)		(55.4)		(63.3)		(26.2)		(13.0)
Actuarial Loss		25.5		17.6		8.9		5.2		42.0		43.6		16.2		8.9
Prior Service Cost/(Credit)		1.4		-		0.5		0.3		1.4		(0.2)		0.4		0.3
Total Net Periodic Benefit Expense	$	23.5	$	11.9	$	6.0	$	2.5	$	43.0	$	48.4	$	18.0	$	7.2
Intercompany Allocations	$	20.8	$	6.7	$	6.0	$	3.9	$	33.6	$	(6.2)	$	7.8	$	6.0
Capitalized Pension Expense	$	13.6	$	5.5	$	2.4	$	2.0	$	21.0	$	21.6	$	5.6	$	3.9

	PBOP
	For the Three Months Ended September 30, 2014								For the Three Months Ended September 30, 2013
(Millions of Dollars)	CL&P			NSTAR Electric		PSNH		WMECO	CL&P		PSNH		WMECO
Service Cost	$	0.6	$	0.8	$	0.3	$	0.1	$	0.9	$	0.6	$	0.2
Interest Cost		2.0		4.9		1.1		0.4		2.0		1.0		0.4
Expected Return on Plan Assets		(2.6)		(6.5)		(1.4)		(0.6)		(2.5)		(1.3)		(0.6)
Actuarial Loss/(Gain)		1.0		(0.1)		0.6		0.1		1.8		0.9		0.3
Prior Service Credit		-		(0.5)		-		-		-		-		-
Total Net Periodic Benefit Expense/(Income)	$	1.0	$	(1.4)	$	0.6	$	0.0	$	2.2	$	1.2	$	0.3
Intercompany Allocations	$	0.9	$	0.3	$	0.2	$	0.2	$	1.7	$	0.4	$	0.3
Capitalized PBOP Expense/(Income)	$	0.5	$	(0.5)	$	0.2	$	-	$	1.3	$	0.4	$	0.3
	PBOP
	For the Nine Months Ended September 30, 2014								For the Nine Months Ended September 30, 2013
(Millions of Dollars)	CL&P			NSTAR Electric		PSNH		WMECO	CL&P		PSNH		WMECO
Service Cost	$	1.7	$	2.3	$	1.0	$	0.3	$	2.6	$	1.7	$	0.5
Interest Cost		6.0		14.6		3.2		1.3		5.9		3.1		1.3
Expected Return on Plan Assets		(7.9)		(19.5)		(4.1)		(1.7)		(7.6)		(3.9)		(1.7)
Actuarial Loss/(Gain)		3.2		(0.4)		1.7		0.3		5.6		2.7		0.8
Prior Service Credit		-		(1.4)		-		-		-		-		-
Total Net Periodic Benefit Expense/(Income)	$	3.0	$	(4.4)	$	1.8	$	0.2	$	6.5	$	3.6	$	0.9
Intercompany Allocations	$	3.1	$	0.4	$	0.8	$	0.6	$	5.3	$	1.2	$	1.0
Capitalized PBOP Expense/(Income)	$	1.5	$	(1.5)	$	0.6	$	0.1	$	3.7	$	1.1	$	0.7