REGULATORY ACCOUNTING (Tables)

12 Months Ended

Dec. 31, 2020

Regulated Operations [Abstract]

Components of Regulatory Assets

The components of regulatory assets were as follows:

	As of December 31,
	2020								2019
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Benefit Costs	$	2,794.2	$	632.3	$	690.0	$	267.6	$	2,382.9	$	539.0	$	629.8	$	218.2
Income Taxes, Net	747.1		458.9		110.4		15.2		725.8		458.8		108.0		12.8
Securitized Stranded Costs	522.1		—		—		522.1		565.3		—		—		565.3
Storm Restoration Costs, Net	765.6		515.1		186.4		64.1		540.6		274.6		200.6		65.4
Regulatory Tracker Mechanisms	850.5		246.6		332.2		95.3		411.5		78.3		207.1		65.8
Derivative Liabilities	296.3		293.1		—		—		334.5		329.2		—		—
Goodwill-related	314.7		—		270.2		—		331.5		—		284.6		—
Asset Retirement Obligations	118.4		32.1		58.6		3.9		97.2		30.8		50.3		3.6
Other Regulatory Assets	161.0		33.7		56.1		20.9		125.4		25.2		55.2		14.7
Total Regulatory Assets	6,569.9		2,211.8		1,703.9		989.1		5,514.7		1,735.9		1,535.6		945.8
Less:  Current Portion	1,076.6		345.6		399.9		115.9		651.1		178.6		285.6		84.1
Total Long-Term Regulatory Assets	$	5,493.3	$	1,866.2	$	1,304.0	$	873.2	$	4,863.6	$	1,557.3	$	1,250.0	$	861.7

Components of Regulatory Liabilities

The components of regulatory liabilities were as follows:

	As of December 31,
	2020								2019
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
EDIT due to Tax Cuts and Jobs Act of 2017	$	2,778.6	$	1,010.7	$	1,044.0	$	371.5	$	2,844.6	$	1,022.8	$	1,071.2	$	392.8
Cost of Removal	624.8		98.4		363.6		12.9		559.8		64.6		330.6		16.3
Benefit Costs	83.6		—		72.5		—		84.5		—		72.2		—
Regulatory Tracker Mechanisms	366.5		148.9		139.7		47.8		325.1		94.8		165.6		57.0
AFUDC - Transmission	76.8		44.6		32.2		—		73.2		46.0		27.2		—
Other Regulatory Liabilities	309.9		39.5		63.2		9.8		132.0		19.6		59.0		13.1
Total Regulatory Liabilities	4,240.2		1,342.1		1,715.2		442.0		4,019.2		1,247.8		1,725.8		479.2
Less:  Current Portion	389.4		137.2		164.8		58.8		361.2		82.8		209.2		65.8
Total Long-Term Regulatory Liabilities	$	3,850.8	$	1,204.9	$	1,550.4	$	383.2	$	3,658.0	$	1,165.0	$	1,516.6	$	413.4