THE CONNECTICUT LIGHT AND POWER COMPANY STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Adjustments to Reconcile Net Income/(Loss) to Net Cash Flows Provided by Operating Activities:
Depreciation	$ 1,568,578	$ 1,433,503	$ 1,305,840
Deferred Income Taxes	27,313	435,889	85,405
Uncollectible Expense	101,141	74,069	72,468
Pension, SERP and PBOP Income, Net	(80,628)	(73,564)	(90,706)
Regulatory (Under)/Over Recoveries, Net	13,062	(919,359)	(151,548)
Cost of Removal Expenditures	(275,906)	(294,984)	(315,699)
Other	(4,826)	(108,365)	(59,886)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(364,156)	(432,620)	(124,393)
Taxes Receivable/Accrued, Net	143,331	55,502	36,357
Accounts Payable	84,192	47,082	(287,637)
Other Current Assets and Liabilities, Net	81,671	19,529	(66,202)
Net Cash Flows Provided by Operating Activities	4,113,572	2,159,737	1,646,161
Investing Activities:
Investments in Property, Plant and Equipment	(4,158,669)	(4,480,529)	(4,336,849)
Other Investing Activities	30,820	(13,365)	(2,897)
Net Cash Flows Used in Investing Activities	(4,306,163)	(4,535,664)	(4,870,732)
Financing Activities:
Cash Dividends on Common Shares	(1,093,074)	(1,001,488)	(918,995)
Cash Dividends on Preferred Stock	(7,519)	(7,519)	(7,519)
Increase (Decrease) in Notes Payable To Eversource Parent	(517,348)	(94,959)	695,552
Issuance of Long-Term Debt	2,942,353	4,501,623	5,198,345
Retirement of Long-Term Debt	(1,400,331)	(1,949,995)	(2,008,470)
Other Financing Activities	(34,732)	(57,082)	(46,466)
Net Cash Flows (Used In)/Provided by Financing Activities	311,528	2,336,817	2,869,237
Net Increase/(Decrease) in Cash and Restricted Cash	118,937	(39,110)	(355,334)
Cash and Restricted Cash - Beginning of Year	127,308	166,418	521,752
Cash and Restricted Cash - End of Year	246,245	127,308	166,418
The Connecticut Light and Power Company
Operating Activities:
Net Income/(Loss)	551,329	512,598	518,733
Adjustments to Reconcile Net Income/(Loss) to Net Cash Flows Provided by Operating Activities:
Depreciation	432,763	406,540	376,904
Deferred Income Taxes	(94,819)	175,424	184,037
Uncollectible Expense	17,949	17,190	11,675
Pension, SERP and PBOP Income, Net	(14,023)	(12,019)	(18,316)
Regulatory (Under)/Over Recoveries, Net	(13,145)	(257,561)	157,200
Amortization of Regulatory Assets/(Liabilities), Net	649,691	104,446	(500,367)
Cost of Removal Expenditures	(59,928)	(60,536)	(80,479)
Other	46,379	(47,680)	(16,194)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(33,660)	(175,162)	(100,684)
Taxes Receivable/Accrued, Net	123,240	64,914	25,633
Accounts Payable	37,800	4,232	(88,040)
Other Current Assets and Liabilities, Net	31,590	(48,973)	(20,535)
Net Cash Flows Provided by Operating Activities	1,675,166	683,413	449,567
Investing Activities:
Investments in Property, Plant and Equipment	(867,772)	(978,532)	(1,093,121)
Other Investing Activities	0	0	173
Net Cash Flows Used in Investing Activities	(867,772)	(978,532)	(1,092,948)
Financing Activities:
Cash Dividends on Common Shares	(430,000)	(333,800)	(330,400)
Cash Dividends on Preferred Stock	(5,559)	(5,559)	(5,559)
Increase (Decrease) in Notes Payable To Eversource Parent	(280,000)	(177,000)	457,000
Issuance of Long-Term Debt	400,000	650,000	800,000
Retirement of Long-Term Debt	(400,000)	(139,800)	(400,000)
Capital Contributions from Eversource Parent	0	300,000	123,500
Other Financing Activities	(5,268)	(8,856)	(9,244)
Net Cash Flows (Used In)/Provided by Financing Activities	(720,827)	284,985	635,297
Net Increase/(Decrease) in Cash and Restricted Cash	86,567	(10,134)	(8,084)
Cash and Restricted Cash - Beginning of Year	2,109	12,243	20,327
Cash and Restricted Cash - End of Year	$ 88,676	$ 2,109	$ 12,243