REGULATORY ACCOUNTING (Tables)

9 Months Ended

Sep. 30, 2016

Regulated Operations [Abstract]

Schedule of Regulatory Assets

The components of regulatory assets were as follows:

	As of September 30, 2016		As of December 31, 2015
(Millions of Dollars)	Eversource		Eversource
Benefit Costs	$	1,618.7	$	1,828.2
Derivative Liabilities	443.7		388.0
Income Taxes, Net	641.7		650.9
Storm Restoration Costs	407.7		436.9
Goodwill-related	469.5		484.9
Regulatory Tracker Mechanisms	454.1		526.5
Contractual Obligations - Yankee Companies	66.0		134.4
Other Regulatory Assets	120.9		134.0
Total Regulatory Assets	4,222.3		4,583.8
Less:  Current Portion	752.4		845.8
Total Long-Term Regulatory Assets	$	3,469.9	$	3,738.0

	As of September 30, 2016								As of December 31, 2015
(Millions of Dollars)	CL&P		NSTAR Electric		PSNH		WMECO		CL&P		NSTAR Electric		PSNH		WMECO
Benefit Costs	$	407.1	$	414.6	$	174.7	$	82.1	$	413.6	$	479.9	$	164.2	$	84.9
Derivative Liabilities	441.0		2.7		—		—		380.8		1.3		—		—
Income Taxes, Net	438.5		88.3		27.0		31.2		444.4		85.7		34.5		31.8
Storm Restoration Costs	253.7		115.1		20.8		18.1		271.4		110.9		31.5		23.1
Goodwill-related	—		403.1		—		—		—		416.3		—		—
Regulatory Tracker Mechanisms	50.6		230.4		99.9		37.8		45.1		311.0		101.2		40.1
Other Regulatory Assets	75.4		48.2		30.8		13.2		82.0		56.3		31.5		11.3
Total Regulatory Assets	1,666.3		1,302.4		353.2		182.4		1,637.3		1,461.4		362.9		191.2
Less:  Current Portion	267.7		259.2		100.6		54.1		268.3		348.4		105.0		56.2
Total Long-Term Regulatory Assets	$	1,398.6	$	1,043.2	$	252.6	$	128.3	$	1,369.0	$	1,113.0	$	257.9	$	135.0

Schedule of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of September 30, 2016		As of December 31, 2015
(Millions of Dollars)	Eversource		Eversource
Cost of Removal	$	457.7	$	437.1
Regulatory Tracker Mechanisms	153.4		99.7
AFUDC - Transmission	65.8		66.1
Other Regulatory Liabilities	33.7		18.5
Total Regulatory Liabilities	710.6		621.4
Less:  Current Portion	160.4		107.8
Total Long-Term Regulatory Liabilities	$	550.2	$	513.6

	As of September 30, 2016								As of December 31, 2015
(Millions of Dollars)	CL&P		NSTAR Electric		PSNH		WMECO		CL&P		NSTAR Electric		PSNH		WMECO
Cost of Removal	$	39.7	$	269.5	$	45.8	$	5.8	$	24.1	$	257.4	$	47.2	$	2.8
Benefit Costs	—		81.7		—		—		—		—		—		—
Regulatory Tracker Mechanisms	62.2		48.4		2.6		12.2		56.2		3.3		3.4		12.9
AFUDC - Transmission	50.6		6.4		—		8.8		51.5		5.7		—		8.9
Other Regulatory Liabilities	12.8		—		3.5		—		4.2		1.3		4.2		0.1
Total Regulatory Liabilities	165.3		406.0		51.9		26.8		136.0		267.7		54.8		24.7
Less:  Current Portion	75.7		48.8		5.5		12.4		61.2		3.3		6.9		13.1
Total Long-Term Regulatory Liabilities	$	89.6	$	357.2	$	46.4	$	14.4	$	74.8	$	264.4	$	47.9	$	11.6