NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Comprehensive Income, Net of Tax:
Comprehensive Income Attributable to Common Shareholders	$ 527,051	$ 494,389
NSTAR Electric Company
Net Income	159,977	133,813
Other Comprehensive Income, Net of Tax:
Changes in Funded Status of SERP Benefit Plan	(21)	(33)
Qualified Cash Flow Hedging Instruments	5	5
Changes in Unrealized Gains on Marketable Securities	0	12
Other Comprehensive Income, Net of Tax	(16)	(16)
Comprehensive Income Attributable to Common Shareholders	$ 159,961	$ 133,797