LEASES (Tables)

12 Months Ended

Dec. 31, 2013

Notes To Consolidated Financial Statements [Abstract]

Schedule of Rent Expense [Table Text Block]

					NSTAR
(Millions of Dollars)	NU (1)		CL&P		Electric		PSNH		WMECO
2013	$	16.3	$	8.1	$	6.7	$	1.7	$	2.9
2012		14.8		8.2		6.2		2.5		3.0
2011		8.4		8.3		19.8		2.1		2.8

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

Capital Leases
(Millions of Dollars)	NU		CL&P		PSNH
2014	$	2.6	$	2.1	$	0.4
2015		2.4		2.0		0.4
2016		2.2		1.9		0.3
2017		2.1		2.0		0.1
2018		2.1		2.0		0.1
Thereafter		5.4		5.4		0.0
Future minimum lease payments		16.8		15.4		1.3
Less amount representing interest		6.1		6.1		0.0
Present value of future minimum lease payments	$	10.7	$	9.3	$	1.3

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Operating Leases
(Millions of Dollars)	NU		CL&P		NSTAR Electric		PSNH		WMECO
2014	$	20.1	$	4.0	$	10.9	$	1.0	$	1.1
2015		18.1		3.6		10.1		0.9		0.7
2016		15.4		2.9		8.9		0.8		0.5
2017		12.4		1.7		7.7		0.6		0.3
2018		8.5		1.2		5.1		0.5		0.2
Thereafter		22.3		4.7		11.7		1.3		1.0
Future minimum lease payments	$	96.8	$	18.1	$	54.4	$	5.1	$	3.8