REGULATORY ACCOUNTING (Tables)

9 Months Ended

Sep. 30, 2019

Regulated Operations [Abstract]

Components of Regulatory Assets

The components of regulatory assets were as follows:

	As of September 30, 2019								As of December 31, 2018
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Benefit Costs	$	1,835.1	$	400.5	$	542.8	$	148.5	$	1,914.8	$	424.7	$	544.4	$	169.6
Income Taxes, Net	713.4		460.2		108.6		11.4		728.6		454.4		105.9		8.3
Securitized Stranded Costs	576.1		—		—		576.1		608.4		—		—		608.4
Storm Restoration Costs, Net	508.9		258.9		190.2		59.8		576.0		302.6		212.9		60.5
Regulatory Tracker Mechanisms	282.7		56.5		121.1		58.1		316.0		33.2		169.1		67.3
Derivative Liabilities	345.8		342.3		—		—		356.5		356.5		—		—
Goodwill-related	335.7		—		288.3		—		348.4		—		299.1		—
Asset Retirement Obligations	101.3		33.8		51.7		3.5		89.2		32.3		42.2		3.3
Other Regulatory Assets	131.8		25.6		57.6		13.0		208.0		27.0		64.6		12.1
Total Regulatory Assets	4,830.8		1,577.8		1,360.3		870.4		5,145.9		1,630.7		1,438.2		929.5
Less:  Current Portion	538.2		173.3		201.2		78.1		514.8		125.2		241.7		67.2
Total Long-Term Regulatory Assets	$	4,292.6	$	1,404.5	$	1,159.1	$	792.3	$	4,631.1	$	1,505.5	$	1,196.5	$	862.3

Components of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of September 30, 2019								As of December 31, 2018
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
EDIT due to Tax Cuts and Jobs Act	$	2,846.9	$	1,025.7	$	1,083.2	$	394.0	$	2,883.0	$	1,031.0	$	1,103.7	$	396.4
Cost of Removal	552.0		56.3		325.2		20.5		521.0		39.9		307.1		22.1
Benefit Costs	79.7		—		67.4		—		91.2		—		76.9		—
Regulatory Tracker Mechanisms	404.3		169.7		167.9		43.3		309.0		89.5		163.7		48.3
AFUDC - Transmission	72.6		46.4		26.2		—		70.7		47.4		23.3		—
Revenue Subject to Refund due to Tax Cuts   and Jobs Act	18.3		—		—		9.0		24.6		—		—		12.6
Other Regulatory Liabilities	111.9		29.9		49.1		6.0		80.2		24.0		29.2		4.2
Total Regulatory Liabilities	4,085.7		1,328.0		1,719.0		472.8		3,979.7		1,231.8		1,703.9		483.6
Less:  Current Portion	441.2		168.1		199.4		54.7		370.2		109.6		190.6		55.5
Total Long-Term Regulatory Liabilities	$	3,644.5	$	1,159.9	$	1,519.6	$	418.1	$	3,609.5	$	1,122.2	$	1,513.3	$	428.1