CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities:
Net Income	$ 739,068	$ 634,422
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	583,568	545,352
Deferred Income Taxes	126,970	120,390
Uncollectible Expense	30,032	27,683
Pension, SERP and PBOP Income, Net	(80,404)	(6,391)
Pension and PBOP Contributions	(52,400)	(72,400)
Regulatory (Under)/Over Recoveries, Net	(226,238)	18,252
(Customer Credits)/Reserve at CL&P related to PURA Settlement Agreement and Storm Performance Penalty	(64,909)	28,583
Amortization	307,357	113,624
Cost of Removal Expenditures	(169,863)	(95,593)
Other	(75,916)	(58,472)
Changes in Current Assets and Liabilities:
Accounts Receivables from Subsidiaries	(176,132)	(85,261)
Taxes Receivable/Accrued, Net	85,071	(9,113)
Accounts Payable	(83,550)	(285,670)
Other Current Assets and Liabilities, Net	(100,835)	(67,961)
Net Cash Flows Provided by Operating Activities	841,819	807,445
Investing Activities:
Investments in Property, Plant and Equipment	(1,549,081)	(1,423,223)
Proceeds from Sales of Marketable Securities	168,997	253,842
Purchases of Marketable Securities	(152,741)	(240,729)
Investments in Unconsolidated Affiliates, Net	(277,001)	(100,527)
Other Investing Activities	10,771	12,661
Net Cash Flows Used in Investing Activities	(1,799,055)	(1,497,976)
Financing Activities:
Proceeds from issuance of common shares, net of issuance costs	126,282	0
Cash Dividends on Common Shares	(427,931)	(402,211)
Cash Dividends on Preferred Stock	(3,759)	(3,759)
(Decrease)/Increase in Notes Payable	(1,317,950)	753,175
Repayment of Rate Reduction Bonds	(21,605)	(21,605)
Issuance of Long-Term Debt	3,350,000	1,525,000
Retirement of Long-Term Debt	(770,000)	(1,022,000)
Other Financing Activities	(42,133)	(35,008)
Net Cash Flows Provided by/(Used in) Financing Activities	892,904	793,592
Net (Decrease)/Increase in Cash and Restricted Cash	(64,332)	103,061
Cash and Restricted Cash - Beginning of Period	221,008	264,950
Cash and Restricted Cash - End of Period	$ 156,676	$ 368,011