THE CONNECTICUT LIGHT AND POWER COMPANY STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities:
Net Income	$ 1,228,046	$ 1,212,686	$ 916,572
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	1,103,008	981,380	885,278
Deferred Income Taxes	347,056	257,154	209,812
Uncollectible Expense	60,886	53,461	63,446
Pension, SERP and PBOP (Income)/Expense, Net	(14,693)	12,888	22,000
Pension and PBOP Contributions	(182,344)	(111,524)	(121,782)
Regulatory Underrecoveries, Net	(314,211)	(516,411)	(124,870)
Reserve at CL&P related to PURA Settlement Agreement and Storm Performance Penalty	81,274	0	0
Cost of Removal Expenditures	(242,130)	(148,332)	(153,477)
Other	(64,640)	(25,957)	(42,610)
Changes in Current Assets and Liabilities:
Accounts Receivables from Subsidiaries	(135,505)	(351,843)	(98,716)
Fuel, Materials, Supplies and REC Inventory	(1,859)	(15,404)	(8,074)
Taxes Receivable/Accrued, Net	(110,621)	43,819	(16,129)
Accounts Payable	(29,201)	122,567	14,866
Other Current Assets and Liabilities, Net	5,569	(9,591)	(11,603)
Net Cash Flows Provided by Operating Activities	1,962,600	1,682,572	2,009,577
Investing Activities:
Investments in Property, Plant and Equipment	(3,175,080)	(2,942,996)	(2,911,489)
Other Investing Activities	22,178	23,809	24,204
Net Cash Flows Used in Investing Activities	(3,447,374)	(4,129,275)	(3,274,288)
Financing Activities:
Cash Dividends on Common Shares	(805,439)	(744,665)	(663,239)
Cash Dividends on Preferred Stock	(7,519)	(7,519)	(7,519)
Issuance of Long-Term Debt	3,230,000	2,760,000	1,520,000
Retirement of Long-Term Debt	(1,142,500)	(327,236)	(801,078)
Other Financing Activities	(46,625)	14,273	(1,006)
Net Cash Flows Provided by Financing Activities	1,440,832	2,594,590	1,172,450
Net (Decrease)/Increase in Cash and Restricted Cash	(43,942)	147,887	(92,261)
Cash and Restricted Cash - Beginning of Year	264,950	117,063	209,324
Cash and Restricted Cash - End of Year	221,008	264,950	117,063
The Connecticut Light and Power Company
Operating Activities:
Net Income	401,725	457,934	410,852
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	338,915	320,709	301,188
Deferred Income Taxes	123,889	144,527	54,005
Uncollectible Expense	13,495	12,882	15,948
Pension, SERP and PBOP (Income)/Expense, Net	5,295	11,372	12,761
Pension and PBOP Contributions	(98,913)	(23,200)	(24,000)
Regulatory Underrecoveries, Net	(152,775)	(279,941)	(24,653)
Reserve at CL&P related to PURA Settlement Agreement and Storm Performance Penalty	81,274	0	0
Amortization of Regulatory Assets, Net	99,009	58,412	51,621
Cost of Removal Expenditures	(95,792)	(57,343)	(60,399)
Other	(10,194)	(57,870)	(19,867)
Changes in Current Assets and Liabilities:
Accounts Receivables from Subsidiaries	(75,881)	(126,638)	(52,746)
Fuel, Materials, Supplies and REC Inventory	(2,339)	(7,225)	(6,171)
Taxes Receivable/Accrued, Net	(25,162)	(12,014)	(23,089)
Accounts Payable	24,895	(17,028)	102,344
Other Current Assets and Liabilities, Net	(14,586)	(27,504)	(11,350)
Net Cash Flows Provided by Operating Activities	612,855	397,073	726,444
Investing Activities:
Investments in Property, Plant and Equipment	(790,083)	(833,973)	(917,532)
Other Investing Activities	329	573	714
Net Cash Flows Used in Investing Activities	(789,754)	(833,400)	(916,818)
Financing Activities:
Cash Dividends on Common Shares	(341,400)	(69,500)	(341,800)
Cash Dividends on Preferred Stock	(5,559)	(5,559)	(5,559)
Increase/(Decrease) in Notes Payable to Eversource Parent	0	(63,800)	63,800
Issuance of Long-Term Debt	425,000	400,000	500,000
Retirement of Long-Term Debt	(120,500)	0	(250,000)
Capital Contributions from Eversource Parent	200,000	275,000	125,000
Other Financing Activities	(5,663)	(4,976)	12,291
Net Cash Flows Provided by Financing Activities	151,878	531,165	103,732
Net (Decrease)/Increase in Cash and Restricted Cash	(25,021)	94,838	(86,642)
Cash and Restricted Cash - Beginning of Year	99,809	4,971	91,613
Cash and Restricted Cash - End of Year	$ 74,788	$ 99,809	$ 4,971