PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Activities:
Net (Loss)/Income	$ (434,700)	$ 1,412,400	$ 1,228,000
Adjustments to Reconcile Net (Loss)/Income to Net Cash Flows Provided by Operating Activities:
Depreciation	1,305,840	1,194,246	1,103,008
Deferred Income Taxes	85,405	346,779	347,056
Uncollectible Expense	72,468	61,876	60,886
Pension, SERP and PBOP (Income)/Expense, Net	(90,706)	(160,857)	(14,693)
Regulatory Over/(Under) Recoveries, Net	(151,548)	(205,294)	(314,211)
Cost of Removal Expenditures	(315,699)	(303,755)	(242,130)
Other	(53,026)	(39,192)	(64,640)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(124,393)	(470,593)	(135,505)
Taxes Receivable/Accrued, Net	36,357	18,358	(110,621)
Accounts Payable	(287,637)	377,657	(29,201)
Other Current Assets and Liabilities, Net	(66,202)	(45,583)	3,710
Net Cash Flows Provided by Operating Activities	1,646,161	2,401,293	1,962,600
Investing Activities:
Investments in Property, Plant and Equipment	(4,336,849)	(3,441,852)	(3,175,080)
Other Investing Activities	(2,897)	20,420	22,178
Net Cash Flows Used in Investing Activities	(4,870,732)	(4,130,490)	(3,447,374)
Financing Activities:
Cash Dividends on Common Shares	(918,995)	(860,033)	(805,439)
Increase (Decrease) in Notes Payable To Eversource Parent	695,552	(78,170)	256,125
Issuance of Long-Term Debt	5,198,345	4,045,000	3,230,000
Retirement of Long-Term Debt	(2,008,470)	(1,175,000)	(1,142,500)
Repayment of Rate Reduction Bonds	(43,210)	(43,210)	(43,210)
Other Financing Activities	(46,466)	(48,185)	(46,625)
Net Cash Flows Provided by Financing Activities	2,869,237	2,029,941	1,440,832
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash	(355,334)	300,744	(43,942)
Cash, Cash Equivalents and Restricted Cash - Beginning of Year	521,752	221,008	264,950
Cash, Cash Equivalents and Restricted Cash - End of Year	166,418	521,752	221,008
PSNH
Operating Activities:
Net (Loss)/Income	195,659	171,570	150,338
Adjustments to Reconcile Net (Loss)/Income to Net Cash Flows Provided by Operating Activities:
Depreciation	140,417	127,962	120,065
Deferred Income Taxes	118,970	15,765	(14,530)
Uncollectible Expense	3,989	9,211	13,113
Pension, SERP and PBOP (Income)/Expense, Net	(10,484)	(16,421)	(3,296)
Regulatory Over/(Under) Recoveries, Net	(273,472)	53,181	32,587
Amortization of Regulatory (Liabilities)/Assets, Net	(16,343)	42,867	86,832
Cost of Removal Expenditures	(39,976)	(39,895)	(30,804)
Other	10,391	8,691	(1,370)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(5,434)	(62,078)	(32,003)
Taxes Receivable/Accrued, Net	916	(23,492)	3,952
Accounts Payable	(55,957)	81,046	(3,256)
Other Current Assets and Liabilities, Net	(36,637)	(6,908)	14,454
Net Cash Flows Provided by Operating Activities	32,039	361,499	336,082
Investing Activities:
Investments in Property, Plant and Equipment	(605,109)	(485,611)	(326,379)
Other Investing Activities	296	1,013	562
Net Cash Flows Used in Investing Activities	(604,813)	(484,598)	(325,817)
Financing Activities:
Cash Dividends on Common Shares	(112,000)	(104,000)	(260,800)
Increase (Decrease) in Notes Payable To Eversource Parent	59,700	62,700	64,300
Issuance of Long-Term Debt	600,000	0	350,000
Retirement of Long-Term Debt	(325,000)	0	(282,000)
Repayment of Rate Reduction Bonds	(43,210)	(43,210)	(43,210)
Capital Contributions from Eversource Parent	400,000	210,000	160,000
Other Financing Activities	(8,524)	(705)	(2,984)
Net Cash Flows Provided by Financing Activities	570,966	124,785	(14,694)
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash	(1,808)	1,686	(4,429)
Cash, Cash Equivalents and Restricted Cash - Beginning of Year	36,812	35,126	39,555
Cash, Cash Equivalents and Restricted Cash - End of Year	$ 35,004	$ 36,812	$ 35,126