NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Comprehensive Income, Net of Tax:
Other Comprehensive (Loss)/Income, Net of Tax			$ 5,500	$ 15,400
Comprehensive (Loss)/Income Attributable to Common Shareholders	$ (116,681)	$ 347,744	744,665	861,644
NSTAR Electric Company
Net (Loss)/Income	184,549	164,711	502,129	433,267
Other Comprehensive Income, Net of Tax:
Changes in Funded Status of SERP Benefit Plan	(23)	(35)	(67)	(100)
Qualified Cash Flow Hedging Instruments	5	5	15	15
Changes in Unrealized Gains on Marketable Securities	0	0	0	12
Other Comprehensive (Loss)/Income, Net of Tax	(18)	(30)	(52)	(73)
Comprehensive (Loss)/Income Attributable to Common Shareholders	$ 184,531	$ 164,681	$ 502,077	$ 433,194