NSTAR ELECTRIC COMPANY AND SUBSIDIARY CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income	$ 293,742	$ 266,400	$ 739,068	$ 634,422
Other Comprehensive Income (Loss), Net of Tax:
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	(793)	163	724	1,680
Qualified Cash Flow Hedging Instruments	5	445	10	852
Changes in Unrealized (Losses)/Gains on Marketable Securities	(505)	273	(1,323)	(463)
Net OCI	(1,293)	881	(589)	2,069
Comprehensive Income Attributable to Common Shareholders	290,569	265,401	734,720	632,732
NSTAR Electric Company
Net Income	119,437	110,912	212,177	204,836
Other Comprehensive Income (Loss), Net of Tax:
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	(27)	(40)	(72)	(81)
Qualified Cash Flow Hedging Instruments	5	179	10	288
Changes in Unrealized (Losses)/Gains on Marketable Securities	(5)	2	(12)	(5)
Net OCI	(27)	141	(74)	202
Comprehensive Income Attributable to Common Shareholders	$ 119,410	$ 111,053	$ 212,103	$ 205,038