GOODWILL (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill by Reportable Segment

The following table presents Eversource’s goodwill by reportable segment:

(Millions of Dollars)	Electric Distribution		Electric Transmission		Natural Gas Distribution		Water Distribution		Total
Balance as of January 1, 2021	$	2,543.6	$	576.8	$	441.4	$	884.2	$	4,446.0
CMA Measurement Period Adjustments	—		—		9.6		—		9.6
Acquisition of NESC	—		—		—		21.7		21.7
Balance as of December 31, 2021	$	2,543.6	$	576.8	$	451.0	$	905.9	$	4,477.3
NESC Measurement Period Adjustments	—		—		—		0.5		0.5
Acquisition of TWC	—		—		—		44.8		44.8
Balance as of December 31, 2022	$	2,543.6	$	576.8	$	451.0	$	951.2	$	4,522.6